frenchyd said:
Buses do require a class B commercial license and if they have air brakes an air brake endorsement. Various regulations depending on your state as regards a bus endorsement if past a certain number of seats. If dual rear axle a Class A commercial license is required.
This used to be true, but not anymore per new Fed DOT rules. Air brakes no longer require CDL or an endorsement. Anyone with a class C license can waltz into a Hertz and rent a 26k GVW vehicle with air brakes. I know, because my boss does it about 4 times a year to move our stuff between theaters. I happen to have a CDL, but he lives a block away from the Hertz lot, so it's just easier.
In many states, the origin makes little difference. You can purchase a 45' MCI, Prevost, Setra, or lots of other large buses and title them as a personal vehicle and not need a commercial license. Some states (like CA) may require you to have a non-commercial class B license for more than a certain size or weight, but that has nothing to do with air brakes or hydraulic. I remember when the DOT changed those rules, and I remember thinking about all the specific air brake education I got during my CDL training and wondered how many people would die because they don't understand how air brakes work.
The bus company I worked for in the mid 90s converted a school bus to a car hauler because the owner raced dirt stock cars. In our case, we had to do some significant widening of the body to max out the 8'6" max width we could do, and the car barely fit, but we made it happen.
The biggest thing you'll need to overcome is approach angle. The tail end of a full-sized (66 or 72 passenger) school bus is usually over 4' off the ground. I would suggest getting the shortest bus you can that fits what you need so it can be brought down out of the sky a wee bit. Otherwise you'll have 16' long loading ramps.
Sorta no way around it, you also have to go up another significant amount once you're in the bus for the wheel wells. You will need to get the CG of the car at least TO the wheels if not further ahead of it. I can tell the difference in how a bus feels if you stuff all the kids in the back. I'm sure a car behind the wheels wouldn't be pretty.
Having said that, I think it's actually a great idea. Ours worked great for the dirt car, but the amount of work that went into it was dauntingly significant, even if you skip the widening part we did. One of the guys we used to ride with at Gorman in CA had a mid-sized bus (probabaly 32') that he converted to bring all his friends and their bikes/ATVs. Always thought it was slick.