I made a better shadow quality for the cars and they also could look even better with a road texture mod. You have 2 choices: All dark shadows or dark center and brighter borders (this one looks more real).

As a bonus, i made a tutorial to help the new members that don't know how to make darker shadows. Hope it helps.

Read the Readme before even moving a muscle or a bone, or you may screw it up.

No offense