I agree and I think the whole self driving push should be incremental anyway: 1. To begin with it is only used on motorways/highways as they are long straight

I agree and I think the whole self driving push should be incremental anyway: 1. To begin with it is only used on motorways/highways as they are long straight roads, where the AI can take over the boring part and the driver can be left to take over if something complex happens. 2. Shared AI maps across all cars that can route everyone to/from work. As this is shared, it can balance the load and result in the least amount of traffic jams. Humans still do the driving. 3. The government sets up AI cameras that monitor city routes, and cars can tap into this information as they drive. The benefit here would be seeing the road from all angles, as well as massive computers bigger than cars doing all the number crunching. Over time more and more city routes could become approved to be fully driven by AI. That's my approach to an incremental design at least.