Make vehicle car doors generate open instead of closed 25% of the time.

Pretty much what it says on the tin.

Adds a little to the atmosphere, since not everyone might have had time to close the car doors after they get out. 

The semi with one door open is a little self-explanatory. But, what happened to the owners of the car with the open trunk? The schoolbus with the back door open? The wreckage with the passenger side door opened?