radio keys make stealing a car faster and easier than ever before.

*Revealed: car industry was warned keyless vehicles vulnerable to theft a decade ago.*

These cars are full of computers with nonfree software and little security. But the insecurity (like the surveillance) depends on their attempt to communicate by radio. If you deactivate the antennas, the car may be safe.

How difficult is that in practice? Does anyone collect information on converting connected cars into disconnected cars?