A. There is no difference between an automatic vehicle and a manual one in terms of driving on Shabbat. Generally, everything that must be done for the purpose of driving may be done, such as use of lights, windscreen wipers, signals, etc. All these should be used as usual, as well stopping at stop lights and driving in a legally acceptable manner of course. Listening to the radio, or other actions for the convenience or enjoyment of the drive, should not to be done.When arriving at the destination, the motor should not be turned off, because this is not a matter of danger. Thus, if there is a non-Jew who can do it, this is the desirable solution. If there is no such possibility, and there is a concern that the vehicle could be stolen, it is permissible to turn off the motor. This should be done in a different manner than usual, like using different fingers than you normally would. If the place is enclosed and there is no danger of the vehicle being stolen, then the motor should be left on, unless you are likely to need to use the vehicle again on that Shabbat for matters of danger.
