As habitual users of battery powered devices, I would expect us to be keenly aware of the limitations of
batteries. Gas engines didn't replace electric cars because of any great conspiracy, they took over because of their merits.
batteries suck today, and they sure sucked worse 100 years ago.
A quote from the linked wikipedia page:
Advances in internal combustion technology soon rendered this advantage moot; the greater range of gasoline cars, quicker refueling times, and growing petroleum infrastructure, along with the mass production of gasoline vehicles by companies such as the Ford Motor Company, which reduced prices of gasoline cars to less than half that of equivalent electric cars, led to a decline in the use of electric propulsion, effectively removing it from important markets such as the United States by the 1930s.
Today, electric cars are only marginally viable, even with massive subsidies, and for much the same reasons they fell from favor back in the day.
Viable means that it does enough of the things that the mass market consumer expects a car to do, and at a price the consumer is willing to pay. I think the tipping point will be around 100 miles/charge at 60/70mph for $15,000, maybe $20,000. Outside of those constraints, it simply is not useful,
as a car, to enough people to take off.
Presumably someone has done the research for more accurate numbers. Oh, and don't hold me to those guesses if the economic (aka non-political) cost of gasoline makes a huge move (like sustained over $12/gal).