The Mercedes L3 certification only applies to highways and for speeds less than 40mph. That has been a solved problem for years, so the L3 certification is not

The Mercedes L3 certification only applies to highways and for speeds less than 40mph. That has been a solved problem for years, so the L3 certification is not an indication of superior tech, but a trick to allow Mercedes salesmen to say "ours is L3 and Tesla is only L2."