The only reason with delaying the introduction of the technology is the consumer unacceptance of it... Fully autonomous is possible, but there's a long way to go for the consumer. Legislators and the Insurance lobby will be all over this as it comes to market here in the U.S., they're all drooling, waiting to slap their little surcharges and taxes on such a "luxury"... Lol
And yes, I buy all my cars to drive them, but there are uses for automatic driving, ie, long distance monotonous roads, self maintenance, self fueling, etc. There will be no need to stop and put gas in your car, when low, it'll let you know, you approve it and it will drive itself while you sleep to refuel. Same for oil changes, etc., so we will be able to enjoy more quality time with our cars