Re: 350z Shoot
hehe, I read that as 35 ounces and was expecting some serious white powder
you have some compositions here which could be improved with a bit of cropping imo (namely the middle two images), take for example, the second one, I light the light and the sign, but all the dead space outside of that is not doing you any favours, crop it out imo. It will also draw the viewer straight to the car, rather that having the various elements like the light and the sign competing with the car.
The same applies to #3, there is no need for space in front and behind the car, but the tree provides additional interest, cropping down from the top and sides would improve drawing teh viewer straight in.
In the last image, work on removing the surface inconsistencies on the door, it looks like a dent, but probably just the light, nonetheless cloneage is your friend.
What light source were you using for these? I hope you got teh issue sorted with your tripod also.
Looking at the first image (sorry no structure to my comments) get some more light out of the red brake light, even better maybe have the light turned on during the shoot..
hth