Waymo's had these driving around for a while now, covered in spinny cameras and stuff. They're always electric jags, with some poor chap sat in the driver's seat just twiddling his thumbs, must be the most boring job in existence, and he's literally babysitting the tools that will replace his entire workforce one day.
They drive better than most humans, their response time is in milliseconds, their road positioning is always bang on and they're always very predictable. As someone who drives, cycles and rides motorcycles in London, I prefer these all day long.
Be interesting to see how they're rolled out, I'd imagine their area of operation is quite small at the moment, and if you call a cab to somewhere outside of their area you'll still get Habibi and his wonderful "new car scent" air freshener.