Truly self driving cars would allow you to participate in other activities safely while the car moves you. You could read a book, play a game, apply your makeup, etc. Given that trade-off, I think most people would be willing to sacrifice the extra 2.5 minutes a trip.
2.5 minute estimate derived from the difference of travel time between half the average US daily travel of 42 miles at a speed of 60mph and the same distance traveled at 68mph.
Most people would accept the trade-off of being in the car 5 minutes longer per day if it meant they got 42 minutes of leisure instead of 37 minutes of weaving through traffic.
Also with a critical mass adoption of self-driving cars the speed limit could be increased.
That’s kinda disgusting. In a world where we produce in excess the needs of everyone, but some must go without because of ilk like Gates and Buffett, the hoarders are blessed with the gift of also not having to pay for stuff themselves.