I apologise for my ignorance though... I had no idea you could hack into a car without any consent. I know that certain makers in the US have road side assistance which can control your car in ways, but had no idea that Gov't were pushing for outside control options on a vehicle to become common place.
Don't sweat it, I'm still learning all the time too.
The thing is they want the engine to go to idle so the driver still has power brakes and steering to safely pull over, the Onstar system can do just that, and it puts the flashers on too.
The other avenue that is already perfected is the HERF guns, that is high energy radio frequency, but they fry the cars electronics and the engine stops, now that steering is becoming by wire the HERF guns can't really be used on certain new cars. The 2016 Infinity Q50 has steer by wire, the steering wheel is not mechanically connected to the linkage.
Side Note:
Now if you have an old points ignition car or a mechanical fuel injection diesel you will be driving after the possible EMP attack that America is very vulnerable to, just one high altitude EMP bomb could wipe out a lot of our infrastructure that would take years to repair. But I digress.
The mandated event data recorders I believe are on all new cars, I don't know if the shutdown is being installed in all cars yet, I know GM and probably Toyota because they use Delphi ECU's.....it's like a lot of the new laws being passed, we don't get to read them first anymore, it sounds like a joke, I wish like hell it was a joke, but it's not.
READ THIS:
http://www.cbsnews.com/news/new-law-mandates-black-boxes-in-all-cars-by-2015/
These black boxes could easily contain a shutdown program that for law enforcement purposes is not authorized for public release.
Here's one of the old HERF units.