I was present at the filming of some of this movie. Watching the rig they used to "run over" the mustang was cool. It was an elaborate swing system that hung the car an inch above the pavement and swung it in front of the tires. Not sure how they dropped it to run it over. The staff complained that the two musclecars in the movie (Two real yenkos, a 440 Challenger and a Hemi Challenger) weren't fast at all. Not sure they were maintained properly.
The Rice rockets they built for the movie were pretty trick. Two of each. 5 of the Saleens, 4 Vipers, 4 Corvettes, 4 BMWs and a ton of bogus police cars.
I'm not 100% sure of this, but I was told that during filming, the stunt drivers screwed up and wrecked one of the Corvettes, rolling it over. Since they filmed it and it looked good, they worked it into the movie. It's on the trailer, but again, I dont know if it was truly accidental or not.
I'm looking forward to seeing the movie. Yes, it's probably gonna be lame and focuses on ricer cars, but it's still fun to watch cars race around and stuff get blown up.