1. It will be hard for them to achieve L2 with their current sensors and no map. AI is not powerful, it's good at re-doing things, and driving is full of exceptions. RIght now they might attempt highway + modern /large road L2, which would be good, but far from what people fully need (city/backroad). We can do L2 on highway for ~20 years, getting out of the 'perfect' road is the challenge

2. L3 can not be done (line of sight issue, that's a big physics nono) : https://remi-c.medium.com/autonomous-cars-why-its-all-or-nothing-for-hard-science-reasons-1f342de3c18d

3. L4-5 is a whole another problem, nobody is close to being there at full speed, especially with limited sensors.