[mikejarema]

Perhaps they're purchasing these to handle the constant/baseline load of riders throughout the day, and then will continue to use human drivers & contractors to supplement demand beyond that, eg. the peaks times you mention.

So it'd be the best of both worlds for Uber: being able to put the self-driving vehicles to use around the clock and not having to make a capital investment to handle spikes in demand, which would just continue to be handled by existing drivers (for now). Just call in the human backup to help out when required.

I'm also wondering if they made the huge order so that they'd be able to influence and guide the requirements for the vehicles to Uber's specs. It seems that the requirements for a self-driving car for an individual's use differs from that for commercial taxiing.