Okay, I'm making that Driver clone in Construct. Everything is going smoothly except for the walls/buildings.
I have it set so the car stops and bounces off the wall, but I find that if I hold the acceleration key (Up Arrow), it bounces, but then will continue to go through, albeit slowly, the wall.
Here's the cap file for you to look at. Don't mind the sprites for the road, those are just rough drafts and will be different in the final.
http://filesmelt.com/dl/driver.cap
EDIT: If you download the cap, DELETE THE "OVERLAPPING WALL" EVENT IN THE EVENT SHEET.