Don't tell me it's loving old, I know. All of the other topics are either locked or too old to post in.
Rigs of Rods is a vehicle simulator, you could fly planes, pilot boats, drive cars, operate cranes, etc.
A few updates ago Flex body was added into the cars and vehicles, this makes the game much more realistic. Hoods and certain parts can bend realisticly and such.
I would call this pretty much a crash simulator, since it's just that fun to do, rock crawling and flying are also very fun.
Download link:
http://download.rigsofrods.com/It's completely free and it's going to stay that way.
Discuss the game or post some of your favorite screenshots. To take a screenshot in game press Print screen, and go to Documents/Rigs of rods
My screenshots:

I was going about 100 and my car proceeded to slide. It hit a barrier and ripped the front left door, hood, and bumper off.

Not sure what happened here.
Here are some videos of the damage model for the burnside.
http://www.youtube.com/watch?v=GLUbv3qE0rUhttp://www.youtube.com/watch?v=isLfcaMpl8g&feature=related