what would make a 07 dodge neon quit while driving

was it running bad before it quit? or did it just shut down on you?

If the motor was running fine prior, I would think it is a timed ignition problem. This could either be in the fuel system or ignition system. I would first check the fuel pump. If your getting fuel then I would check the timing belt then the crank and cam sensors.

Hit any potholes? Does neon have anti theft? If you have a short in crankshaft sensor won't start until replaced. Use a test light 12v on #1 plug wire and try to start light will blink when you turn over no light is control module shouting down ASD