. . . .
With an autonomous car, defects in the brakes would be immediately noticed. The car would demand that it be serviced before driving you anywhere.
You've been watching too much TV.
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Fuel Cells are a myth. They're difficult to make, difficult (and energy intensive) to refuel, and there's no existing infrastructure.
With EVs, there's simply not enough battery supply in the world right now. It's why Tesla is building the Gigafactory in Nevada. Once that factory is operation in 2020, Tesla will control 75% of the world's battery supply. Having all of those batteries will be enough for them to build 1M cars per year.
That's why GM says they're only going to build 30K EVs per year - they can't obtain enough batteries to build more.
Until other companies get serious about making batteries, Tesla is going to be the only major EV manufacturer. The other car manufacturers can talk all they want, but they're not making the investments that they need to right now to be a major player in this game in a few years.
When I checked a couple of years ago, there was at the time only enough raw materials to build batteries for 10 to 12 years at the then current rate of usage. Without a technology breakthrough, EV's are dead in the water for mainstream use.