Nascar Promo animatic test

http://homestead.juno.com/bcarvajal/files/nascartest1.mov

Just started working on my new tv promo reel and came up with this. Now the cars in the shot are simple because I wanted to see how it would look before I build more detailed cars. I basically rendered things out in two layers in Maya and then brought them in to AE. The flag was waved in AE and drop shadows were added to the cars. I am defently going to put more into the shot (a live action shot of nascars in the background or a themed color background?) and suggestions?

Please note, this is not the final product.

thanks

bryan