Yes it does seem unlikely to be a car jacking - who would have driven the car away- a motorbike would have been left behind as evidence. Unless that was stolen too of course. And the car would have been damaged so reduced its value.

This sounds very frightening. I hope your husband is ok?

I think Ive mentioned before about being pursued in my car by an angry female motorist many years ago who did cut throat gestures which I could see in my mirror. I lost sleep over that and still remember it now and shudder every time I drive down Woodvale where it all started. I never never make gestures to any other driver or challenge them for that reason as I think people are crazy enough anyway in cars without any further provocation.

I hope the police attend soon and give you some reassurance.