If the accelerator sticks and you choose to turn off the engine you should...
a)Take the key out of the ignition to make sure the car is off.
b)Turn the key all the way, but do not take the key out. You might need to turn it on
again quickly.
c)Turn the key to the auxiliary function to maintain some power in the vehicle.
d)Make sure you do not turn the key too far so that the steering wheel does not lock.