Roll starting with an automatic is more difficult than with a manual. Be careful because the brakes and steering will barely work. I think it is better to go down a hill than trying to push with another car. If you do push with another car, back off with the push car before trying to start the non runing car. With a auto, you need a big enough hill to get to 30 MPH so for safety's sake, it is probably better trying to start the car using the starter.

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