Everyone would build to pass the test track. This does get at the problem though: the permutations of scenarios an L5 system has to correctly process is a huge number. Trying to build a system that can do that appears to be beyond anyone’s av system right now. This is why the most advanced deployments are all geofenced. That way at least the traffic signs and signals, lane markings, etc all understood and tested. Even then ‘shit happens’. Untested scenarios still occur. Also the maps are always out of date.

The problem really requires AGI, and nobody has one of those, or if they do it’s a secret.