Now imagine a similar vulnerability being discovered in about eight years' time.
Is it fixable on the older kit? Probably not.
Is the manufacturer going to bother trying to fix it on something that old? Definitely not.
Does that make it any less serious? No.
With it not being fixed, does that make it more likely that someone will build on it to find a way of compromising the vehicle's controls? Yes.
And there you have it. The reason why the concept of the "connected car" needs to be banned. Now. It won't be of course. Government surveillance and data harvesting opportunities trump a mind-numbingly obvious lethal risk every time.
Anyone buying a car with these features needs their bumps felt.