Arizona is already there.
Washington State is just playing catch-up.
Arizona is welcoming the driverless refugees from California, where they were “driven out” by excessive regulation.
“The use of self-driving cars in Arizona comes after California revoked the registrations for 16 self-driving Volvos operated by Uber. Arizona Gov. Doug Ducey promised less oversight. He even took part in a ride on Tuesday.”
Uber suspended their driverless car program two months ago after a crash in Arizona.
beta testing of level 4 cars is rather widespread - appears there are around 5,000 level 4 cars being tested in the US today.
Auto makers are well on the way to offering level 4 retail by 2020.
my estimate is by 2025; level 4 & 5 will have a 20-30% market share of new motor vehicles