How is Tesla's approach to full autonomy is different from the other companies?

Tesla's approach to achieve full autonomy is different from that of other companies.[302] Whereas Waymo, Cruise, and other companies are relying on highly detailed (centimeter-scale) three-dimensional maps, lidar, and cameras, as well as radar and ultrasonic sensors in their autonomous vehicles, Tesla's approach is to use coarse-grained two-dimensional maps and cameras (no lidar) as well as radar and ultrasonic sensors.[302][303] Tesla claims that although its approach is much more difficult, it will ultimately be more useful, because its vehicles will be able to self-drive without geofencing concerns.[304] Tesla's self-driving software has been trained on over 20 billion miles driven by Tesla vehicles as of January 2021.[305] Tesla also designed a self-driving computer chip that has been installed in its cars since March 2019.[306]

Tesla uses e coarse-grained two-dimensional maps and cameras (no lidar) as well as radar and ultrasonic sensors whereas its competitors rely on highly detailed  (centimeter-scale) three-dimensional maps, lidar, and cameras