This might work for an airport rental car or distance parking lot pick up and drop off, a moderate speed local tour bus or a very specific public transit or school bus route but not a for revenue service. If the bus isn't moving it's not making money and being down for five hours after moving for four might not be a working solution for a large potion of the for profit operators.
For an RV application using this configuration recharging a depleted 600,000 watt battery bank from a CG 50 amp service will take at least 50 hours. 30 amp will take a week. Drive for 5 and recharge for 50. The summer vacation drive from upstate New York to Fort Wilderness that used to take 3 days will now take 12 days. Describing this as a predecessor to an EV class A is a bit like describing a 1908 Model T as predecessor to a 2020 Shelby GT500. It did happen but it took over 100 years to get there.
