And don't forget the fly-off handbrake, today's most effective antitheft device.
The driver who delivered by TR4A got all upset because, according to him, the rear brakes were locked. I looked at what he was doing. "Don't push the button on the emergency brake handle," I told him. He continued to push it. I repeated this about four times before he got the idea and then it released easily. So, even when you are shouting the instructions in a guy's ear, he often STILL can't work the thing.
Super theft deterrent!!
And, when you consider additionally the manual transmission, RHD (maybe), manual choke, and separate ignition and starter switches, it's amazing that any of us can drive the freakin' things, let alone a car thief.