There are also cars on the road that are certified as "vintage" and therefore do not have to comply with modern safety requirements.
...and then I get their owners and passengers as clients when sh!t hits the fan (i.e. when 1971 Corvettes roll into ditches due to drinking at car shows and then 'driving' home)
It all takes time.
That's the problem with the car-sharing/self-driving cars. It'll take decades before there's significant uptake. Quite unfortunate.