Not bad, not bad.
#1 cool concept but, I'm not really feeling it. I think it's tilted too much and it'd be good to see the whole car in the shot.
#2, 3, and possibly 4 look like they could be used in an ad, if it wasn't for those power-lines reflecting in the windshield of course
. They're good other than those reflections.
#5 is too dark.
#6 looks like you're going full speed into a railing haha. There's also too much light reflecting off the Mazda, makes it too bright. It's a good pan shot, but a different location (less cars and such in the background) would make it better.