https://www.theregister.co.uk/2018/03/22/self_driving_cars_fog/

MIT brainiacs have come up with some new fangled technology that could help self-driving cars cope with misty mornings.

Adverse weather conditions such as rain or fog has long bedeviled autonomous vehicles, with studies showing that today's robo-rides will, at best, pass control back to their human masters when visibility drops.