The more i read this the more i like my ten year old BMW with nice little things like throttle cable and i don't even want to think about how fly by wire brakes work when the fuse blows.

To be entirly honest i would not buy a car that complicated.

i once had a audi and the relay for the fuel pump blew so to get home under the rear seat the cable for the rear fogs passed by the cable for the fuel pump so i spliced the two together and drove around like that for a week.

Another old car the clutch cable broke so i had to drive about 100miles clutchless

Also i ran an old van and the altenator died being poor i could not afford to get a new one so i got too old fishing boat batterys that i could lay my hands on and drove around with them in the boot and charged them up every couple of days

Try that with fibre optics it won't work.