This happened. http://youtu.be/Xx0jmj0YmJg (http://youtu.be/Xx0jmj0YmJg)
Thankfully the bug was swiftly tracked down and physics were restored to normal.
I thought cars were meant to do that? At least they do when I drive them.
Reminds me of the Carmageddon mod for GTA4
http://www.youtube.com/watch?v=ifTIuA8Dq58