The big car companies doing automatic driving (Ford, Volvo, etc.) are talking about 2020 as the rollout year for the technology. They're public about this because the supply chain has to get ready. Continental, the parts maker, says they'll have automotive LIDAR units in mass production in 2020. Not because they can't do it sooner, but because they can't turn on the production line until there are volume orders. Prototypes, of course, will be available much sooner. Probably now.