This has been twice now. I auto stared my car to let it warm up and when I go and reach 10-20mph car starts shuttering, I pulled over turn car off and started car again and then it drove fine. Today I auto started car to warm up before leaving work I came outside and lights were in but car not running. Car would not start. I heard fuel pump humming so it wasn't that. So I turned car on and off 3 times to pump fuel and then car started. Let it sit for 10 minutes running and then drove 45 minutes home no problem. Anyone have any ideas what could be the problem.