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Ceo's BMW X5 was stolen last year.He watched the CCTV later on.The guy came to the car with a laptop and drove away after a minute or so. Police found the car dumped somewhere on a road,as the car ran out of fuel and apparently it had some security feature that prevented the thieves from refiling it.

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Sounds like you’re describing a range extender attack on the keyless start. Almost(I don’t know any that aren’t) all cars with the feature are vulnerable to this.

Latest BMW, Audi, VW and Ford (or at least some models from these manufacturers) key fobs stop transmitting after X amount of time (based on motion).

Interesting. So do you have to put your fob in a bowl so it won't be moving to prevent it from being relay attacked, or some such?

Yes but I would assume that coming home and putting all your keys somewhere to lay down is a routine for most people.

Lots of people sure. Mine stay on me til I go to sleep typically.

This feature can still protect you if it works for enough people that it's no longer worthwhile to attempt to unlock a car this way.

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