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I think it was the Electric Car company in the early 1900s that had their warehouse of electric taxis burned to the ground. No more electric cars appeared en mass until Ford did their prototype.

I am not familiar with the background yet it is said that the fire wasn't a coincidence. Things like these make me wonder in what direction could humanity be advancing if things turned differently at some crossroads ... Like the oil industry, for example

There are documentaries on the net of other projects supposedly deep-sixed by Big Oil. One project was a gas vapor engine. It was supposedly able to get a car to travel 1000-2000 mile on two gallons of gas. The tech was real but I don’t know if what happened to those people were real.