I don't think car alarms detect these kinds of vibrations. It's specifically tilt and more impactful stuff. Certainly, the alarm is never going off when I get my car back via the lifts that I've used. It's probably too smooth.
The problem will be aftermarket car alarms. There used to be a car that parked on the street near my apartment that would go off ever time a bus went by it.
Car alarms go off all the time on ferries from cars that really don't like being locked and moved.