PhotoDim
Good HDR technique, might consider cropping out the rear garage door in the old car shot, its an eye-trap distraction from the visual flow of the car.
Bert

I'm not sure why you chose HDR for either of these images. They dont appear to be scenes with huge dynamic range.
1. Could be sharper. I'm from the school that HDR shouldnt look like HDR, though some like the extreme looks you can get. This one is subtle except around the tires. A bit of subtle haloing around the top of the truck. Colors do have that HDR artificiality about them, especially in the blues, giving it a bit of a painted feel. I'm suprised the whites are blown on the plate.
2. More HDR-ish in terms of the bike's intense, somewhat over the top colors and reflections. While there is plenty of detail in the pavement, bike looks like it could be a bit sharper. Since I dont use HDR, I cant advise on tweaks, just give you feedback of what I can see. Really minimal haloing on this one; nice job.

Scott