Not a documented case of theft, but more research into how to steal a car using antennas. Using antennas the researchers has shown that a simple relay between contact less keys and the car they protect can open the doors and start the engine.
As I read the article the designers of this system has overlooked a fundamental threat to the key lock system. This shows that threat modelling is very important and time used on that is time wisely spent. It is also in my opinion an example of what happens when you introduces new technology into tried and tested security systems in order to remove or mitigate a perceived inconvenience. Most often the tradeoff is not in the intrest of the user in the end.