[swagasaurus-rex]

The likelihood of such a legislation on a national level is unlikely. Instead, you will have cities that refuse to adopt self-driving, maybe because they were burned with a tragedy (with no regard to statistics), maybe to protect human jobs.

Large companies can adopt in other cities, or if need be, other countries eager to change their quality of lives.

[bduerst]

Precisely. Regulatory adoption won't be much different than how government has responded to ridesharing today. Highly fragmented but typically open.