Here is my theory. It has only a little to do with concern for "climate change", yet the virtue signaling is nauseating.
I could build an electrical vehicle in my shop. Just supply me the lithium battery pack. I can weld up a frame and body, install servo motors connected to servo drives, and connect it all to the motion control controller. Mitsubishi, Allen Bradley and ABB make great off-the-shelf motion control systems. Even cheapo Automation Direct SureServo2's would work. Add a Maple HMI touch screen. Add gearboxes, inputs and outputs to all the bells and whistles, write the program.... I could have it up and running in 1 to 1.5 years. By myself. It would look like crap. I don't have the metal stamping, painting and injection molding facilities like the automotive vendors have. But it would drive.
So what's my theory? They are simple to build and the cost of building them is low compared to an internal combustion engine, drive train, differentials, etc. I can't build a gas vehicle in my shop.
The auto makers can build EV's with a lot less people... and material costs.
I'll drive my Jeep Wranglers in spite of them needing the occasional radiator, oil cooler and water pump. I'd rather work on them than drive a worthless EV.