What about LIDARs that aren't mounted on cars themselves but on streets which all cars can connect to. This will limit the useful range of such cars, but imagin

What about LIDARs that aren't mounted on cars themselves but on streets which all cars can connect to. This will limit the useful range of such cars, but imagine manhattan decked out in these things and taxis or busses that only work in Manhattan. Could still have huge savings, especially if combined with computer vision as a fallback. Edit: To be honestly my idea's probably not worth pursuing. I fully expect the cost of LIDARs to come down drastically in the next five years.