The behind the scenes drama on this program is very, very interesting. Lots of misinformation out there, but it is correct that an additional $2billion has been thrown at the program and NHTSA's issued a statement that any and all deals made will be honored.
As of the middle of this week, not all dealers were even able to register for the program. Still, everybody's been surprised (NHTSA in particular) at how many deals have been made so quickly.
And nobody was prepared for the gov't's "creative" revision of combined fuel economy figures earlier this week - especially not dealers that have been making deals and letting customers drive off since July 1st!

So those of us who argued only craptastic SUVs would be sent to the crusher...are now free to beat our heads against the wall.