I grant you the answer is not obvious, but it will be interesting. The world has known how to make electric cars for well over a century now. But early electric cars lost the race to their internal combustion engine cousins mainly due to the convenience and speed of refueling and the greater energy density of gasoline over lead/acid batteries.
One gallon of gasoline, weighing about 6 pounds, held about the same amount of energy as 600 pounds of lead/acid batteries. Game over.