I'd love to cycle more outdoors, but I'm always wary of the risks. How cool would it be if you could hire a waymo as a "team car" and have it follow you around? It could also carry extra equipment...and act as a ride home in case of emergencies.
If you ride conservatively (use lights at night, use good judgement at intersections) and stay away from buses and trucks, the exercise vastly outweighs any risk.
I get your idea, but it does rather sound like asking a 4,000lb death robot to follow you around closely and hope that it doesn’t screw up …
that's a lot of energy consumption.
For a more ecologically conscious alternative, I recommend carrying a handful of sparkplugs.