there are years since lidars that size are capable to "read" the environment at 200-300m. the question is: how powerful is the laser projector? in order to work in rain, fog, strong sun and yet to be eye safe for the humans exposed to the beam....
Toshiba has revealed new LiDAR technology in the form of a palm-sized projector, measuring 71 cm³ (~4.3-in³). The device can be used to increase the detection range of an autonomous vehicle to 300 m (~984 ft). The company claims that the system can accurately read road conditions for a safer driving experience.