The self driving companies won't go after buses first because they haven't already gone after buses first. Google's been using the mid-large size vehicle for ye

The self driving companies won't go after buses first because they haven't already gone after buses first. Google's been using the mid-large size vehicle for years now. It is much smaller, more manueverable, better acceleration, lower costs to procure, and yet another benefit is you're not limiting yourself to wherever the buses happen to have to go. Buses have to stop/start on the whims of the driver, so is Google going to make a self-driving bus but still have a driver there to make it start/stop? Where is the efficiency gain? Where is the helping of the handicapped or uncapable that they achieve with personal vehicles? I think all the companies in the space have it right, personal vehicles first, as well as freight vehicles, and then trains/planes/buses later since they already have skilled drivers that we'll have to retain anyway.