Waymo CEO Says Self-Driving Cars Won’t Be Ubiquitious for Decades

The head of Alphabet Inc.’s autonomous vehicle unit gave a cautious outlook for the nascent industry on Tuesday, saying the technology won’t be ubiquitous for decades and that driverless vehicles will always have constraints.

Waymo Chief Executive Officer John Krafcik said self-driving cars will require driver assistance for many years to come, and that he doesn’t envision a day when the technology operates in all weather conditions and without some sort of “user interaction.”