thanks for all your replies. im sorry if i was unclear, i ment push button start. i leave my car parked in the morning and drive away in a company vehicle and i have been paranoid if i left it running or not. thats why i hate these push starts so much. but if i drove away it would be sweet if it turned off by itself. i understand its a safety feature so if ur key battery dies on the highway then it wont shut the car off, but i think if its in park then they should turn off after like 15 minutes, that would be nice.