Originally Posted by cooker

TGVs only go from population centre to population centre - the driverless car would take you anywhere cars currently go, and it's not going to be limited to 20 mph. It would be no different than being on a road trip where you or a companion are doing the driving, except that you would be passengers the whole time, and you could snooze, sight-see, read, play games or videos or whatever.

You've mentioned that you drive to trailheads - you could do that with a driverless car and nobody would have to drive home at the end of the event, exhausted from the cycling and forcing themselves to stay alert, and perhaps having missed out on the post-ride beers.