Last night I parked the car and left it running for 3 hours while I visited friends!!! I had no clue that the car was running of course. I always had problems with "Key less start" feature but had manage to catch it before walking away like this. Did I do any damage to the engine? It seems to be running okay today. Is there anything I need to check? Final question: Is there an easy way for this absent minded driver to know that the engine is on before stepping out of the car?