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.
Car alarms go off all the time on ferries from cars that really don't like being locked and moved.
loading story #49059858
loading story #49060212
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.
loading story #49060368
loading story #49060617