I'd expect their rules for 2014 to be similar to the current ones for the OUSCI below. Cars that were invited throughout the year are expected to be at SEMA in the display to be allowed to race the final event. They invited random cars and winners of other events they sponsored throughout the year. Personally, I'm hoping they change the tire spec rules or I probably won't attend.
EDIT: Andy beat me to the punch with the link but I'll leave them below anyway.
Qualifying vehicles must be domestic or import four-wheeled street capable vehicles with a strong resemblance to a current or former production model.
The only open-wheeled vehicles allowed are '34-and- older domestic vehicles and replicas thereof. Other vehicles such as production "concept" cars may be allowed. This event is designed to be a fun and spirited competition to showcase vehicles conceived and built using parts and manufacturers represented by the SEMA organization. Vehicles must be set-up to be street-driven daily in all kinds of weather.
The vehicle must be shown at the current year SEMA Show during the week previous to the OPTIMA Ultimate Street Car Invitational (OUSCI). The entry can be a booth vehicle, feature vehicle or a vehicle displayed in the OUSCI car corral. Vehicles that are not on the SEMA Show grounds during the entire show will not be allowed to compete.
Vehicles returning from a previous OUSCI event will only be considered if the vehicle meets one or both of the following:
The vehicle has had significant upgrades that must include outwardly visible modifications. The car must look like a different vehicle from a distance of 50 feet. If you are unsure, please send us "before-and-after" shots and we will tell you if the vehicle looks different enough.
The vehicle has won an OPTIMA regional qualifying event in the current year by the owner or builder of record. That driver who won the qualifier must also be the driver at the OUSCI and meet rule #10.
This event has a very specific media focus and the rules are intended to encourage a spirit of safe and fun competition. The organizers understand that everyone will not like our rules or play nicely with others, so we created rule #25.
If the rules do not specifically say you CAN do something, you probably CANNOT do it. It is 100% your responsibilities to contact us and obtain clarification in writing anything you think may fall into a 'gray area.' Don't wait until the day of the event and expect special consideration.
The OUSCI will contain a combination of the following elements:
Street Driving/Open Road/Rally Competition
Autocross
Acceleration/Braking
Road Course
Performance/Design Competition
All event participants must compete in all segments of the event to qualify for any awards.
All event participants must be registered members of OPTIMA's brand enthusiast online community, Power Pack Nation.
Register at Power Pack Nation
Each vehicle entered in the competition will represent a single entry, with only one driver allowed. Participants cannot switch drivers or share vehicles with other participants.
The registered owner or builder of record must drive the vehicle during all events. Builder of record must be an identified individual that is not a professional driver. Builders of record must be identified and approved by OPTIMA before October 15th. No competitive professional drivers will be allowed to compete for awards or the Ultimate Street Car title. As a rule of thumb, the builder of record must have had responsibility for at least 70% of all modifications to the vehicle. A painter, suspension tuner or motor builder is not considered to be a builder of record if they performed only those specific duties on the vehicle. A person who completed ALL of those duties may be considered the builder of record. If the owner of the vehicle is the person who contracted the build through many vendors then the owner is the builder of record. Typically the only person who qualifies as the builder of record is the owner or manager of a shop who modified the vehicle into its current condition from the condition in which it was purchased.
All drivers and passengers must sign a liability waiver. Passengers will only be allowed during the road rally and autocross portions of the event and must be at least 18 years of age, identified and pre-registered before the competition begins. Only one passenger may be in the vehicle during the autocross event and the passenger safety harnesses or belts must pass technical inspection.
Passengers will not be allowed in any open top vehicles.
A mandatory driver/passenger meeting will be held prior to the first competition. Roll call will be taken to verify attendance.
Only official wrist-banded drivers and passengers may ride in the cars on the track.
Participating cars must pass a safety and technical inspection that will emphasize safety. Safety features that do not offer a competitive advantage such as racing specific harnesses, roll cages/bars, fire systems, etc, are acceptable.
All convertibles or any open top vehicle must have rollover protection – no exceptions.
Helmet use is required during any non-highway segment of the event.
Helmets must have a SNELL rating SN2005 or newer.
Non-synthetic clothing (cotton, wool, leather, etc.) covering the torso, arms and legs shall be required (no shorts or short sleeves). The use of racing fire protection gear is highly recommended.
On board fire extinguisher is mandatory – A 2.5 lb. minimum, automotive BC fire extinguisher, with a secure quick-release mounting bracket made of metal is required. The extinguisher must be within easy reach of the driver. The metal bracket must be permanently mounted to the vehicle – zip ties are not acceptable.
All competitors must have current registration, proof of insurance, and a current driver's license. All of the following are required: current registration, working headlights, taillights, brake lights, turn signals, and a safety-glass windshield.
A 12V accessory adapter is required for certain timing equipment. It is the participant's responsibility to insure this is in place and working. Failure to record times in any event will disqualify participants for any awards. These are inexpensive and available at any auto parts store so please have them ready on race day.
Each vehicle is required to display the OUSCI decal package per specifications.
Participants must use DOT approved, non-competition, treaded (non-grooved) street tires (no competition radials, no R compound, drag radials or shaved tread) with a tread wear rating of 200 or higher. Tires will be required to pass a technical inspection at the track. The spirit of the event requires the use of a DOT approved "non-competition" tire – any modifications to tires will be unacceptable. Any vehicle with tires showing any evidence of modification will be immediately disqualified from the event. Segments of the OUSCI will incorporate competitive elements that will make race tires unsafe and uncompetitive. Safety is of the utmost importance and the race director or event coordinators will not hesitate to disqualify questionable tire selections.
Competitors must use a single set of tires for the entire event, no tire changing between events will be allowed. Tires will be marked during tech. Tire changes will be allowed in the event of a catastrophic failure, but replacements must be of the same size, manufacturer and model as those approved during tech inspection.
Race director and event management staff will have COMPLETE discretion to deny or remove from competition anyone in the event for any reason.
Rules or spirit of the event interpretation will be at the sole discretion of the OUSCI steering committee or event organizers.
Optional but highly suggested: Should you be one of the lucky invitees of the OUSCI, we strongly suggest that you support our event sponsors and take every opportunity to show off your passion for the products you use. OUSCI sponsors pay for your entry. Pay them back by promoting their products. You and/or your car may be shot by various magazines or filmed for a TV show. Wear sponsors hats and shirts. Put the decals on your car. Your enthusiasm may possibly have an influence on future invitations. Overall, the entire industry needs your support so please do your part.