thanks for all the comments. a few remarks for those of you that asked:
i did this by leaning out the passenger side window of the car with a short tripod. i put the tripod up against the side of the car and snapped some shots. i tried a lot of different angles, and was torn when submitting on which type of angle to go with. some showed a lot more of the road, which i was suspicious might do better in an "on the road" challenge than one without any real road at all. i ended up submitting this one as i really liked the effect that was going on and it was definitely the most "arty" shot of the bunch. i was happy with the shoot as a whole.
the reason the right side is blown out is probably pretty obvious. it was a bright day and i was using a 1 or 2 second exposure to capture the blur. this, coupled with the fact that it's a dark green car (my girlfriend's mitsubishi eclipse, btw) made the photo hard to expose properly in all places. in the end, i liked the effect it gave, especially where it blends into the car on the top portion of the fender area.
if i was really serious about making this photo look its best, and i had had more time, i would have had the car washed and waxed to get rid of some of the dust and pollen that you can see in certain areas of the photo. i think that was the only thing that i didn't really like about this shot.
Look of speed, color and placement of wheel on vehicle were well done. A bit too much white area to front of vehicle. Distracts a bit from overall impact. Otherwise excellent.
Pure fluid motion. I really wish you could have found a way to balance the dark reflection of the car with the street and buildings that are so completely blown out. (I'm guessing you had to play around a little to get the car to show up properly.) Nevertheless, I love the way this looks like liquid mercury.
I am quite impressed with this photograph... I tried something similar and if u ask me about it after the challenge, i'll tell you :) You have done a great job of showing motion and a sense of 'hurry hurry' in this image... I know that it must have been difficult to get this shot just right... excellent shot!