Try watching some other cars. I have noticed this phenomenon a number of times. If the alignment is OK, then it's probably an optical delusion. It seems most evident on 1986 Chevy Nova's. If you get yourself directly behind the centerline of the car in front of you, it goes away. Remember, when you think you car is directly behind the car in front of you, you're not. You are sitting to the left of center. Weird, but try it, you will notice that this does really happen.
[This message has been edited by jeffsr (edited 01-17-2000).]