a friend with a Honda lost their key (fell into a lake). 300 miles from home where the other key was.
Well he should have had a spare wired under the car somewhere.
Man the horror stories I've heard about people with computers in cars in the outback. Yes electronics is reliable, it's also totally unfixable in the bush, unlike most problems with older vehicles.
As they say in the classics, "You can't fix a computer with a sapling".
I had a mate with $120k worth of MAN 4x4 truck, one day it refused to start because the computer decided that the brake linings were worn, they weren't as it was a new truck at the time, but who gives a toss even if they are, you have to get back "home", I've driven vehicles with no brakes, no clutch, even half the front missing
I wonder what a computer would have made of that, and yet after that accident I drove for another 1500 miles just fine.
It will be a cold day in hell before I have any computers in a vehicle I use in the outback, possibly around town should I ever be unfortunate enough to live in one again 