I have the brushed e-revo and had lots of fun with it over the last 6 months.
A while ago my engine died and was replaced by the local hobby store, I was told it had water damage and died.

They also cleaned and did soemo general maintainance on the car.

I tool it out with the new engine to the park and it was fantastic, driving like new! I manage to do one battery, half way through the second the car bumpes into a tree (not a big crash) and stops driving. the servo turns the wheels (steering) but teh car won't move forward or back... in fact even if you push the car the wheels are locked and won't roll...

Any ideas what this could be?

Many thanks,