Just what have GM's mega losses got to do with this, unless you are trying to distract from the OP?
This is really not surprising, in fact it was enevitable. He started something that was appealing to the few, especially rich ulra liberals who could virtue signal their greenness via the car. However it is becoming mainstream now an the proletariat are becoming able to buy such vehicles so why would anyone want to buy a car like this now? He is not a car manufacturer and can never complete with the big boys and the car is not niche enough now.
Of course his rants would not have helped either, it often looks like he is loosing the plot, not good for someone left in his position.