The price of a car is 35x the price of a phone. Does the cost of the LIDAR scale up 35x when going from phone distances to car distances? That is an honest question that I don't know the answer to.
No, it's more than a factor of 300 price difference for the big lidars currently used on cars versus what that thing'd cost. The big spinning mirrors in the car lidar really bring the price up.
I think the use cases for LIDAR in cars are different enough that it would definitely scale up the cost of implementation