The other day I was driving along in my 2007 Cobalt LS and touched the brake a little, or I may not have, its hard to remember, and the motor died. The radio was still running, but the speedo and tach just went to zero. I stopped the car and put it in park and restarted it and everything was just fine. This has never happened before and not since. Are there any ideas as to what could have been the cause? And I don't need people to tell me to take the car into a mechanic because I know at least that much.

Im just looking for ideas as to what it could have been or people that have had the same thing happen to them.