When I was a young driver in the late 1960s I had a simple cut-out switch to help deter thieves. I also read about a more sophisticated device that allowed the car to be driven away but after a few hundred yards the engine cut-out leaving the thieves stranded. I assume that it operated by using a small reserve of fuel. Perhaps today's more sophisticated cars do not allow for such a device but I have always thought that it was an excellent idea as it is unlikely that thieves would start fiddling around to re-start the car when they are on the highway. They are more likely just to abandon it. Is anything like this available?