Google’s Electric Bus Loses Power on Uphill Climb..
As the bus lost power, it began to roll backward, creating a path of mild destruction by colliding with nine vehicles on its way down, according to World Peace Exclusive. … The SFMTA’s Sustainability and Climate Action Program explains that the agency’s greater goal is an all-electric fleet and a carbon-neutral San Francisco by 2040.
Really? It looks like PE = mgh is far stronger than Current (2) x Resistance. Note that height doesn’t have to increase much to overwhelm the bus’s motive power.
When a thermal overload trips out power you need to have a backup plan. Maybe Google engineers have never heard of USING FAIL SAFE systems. When moving backwards and the vehicle is in anything but reverse mode, brakes should automatically engage. This would prevent the bus from playing pinball with stationary objects. I bet the insurance companies are losing their minds. Ha! Ha! In reality the electric bus is NOT adequate for this type of service.
NOTE: This is what a city governed by abject stupidity looks like.