Biggest problem with electric cars is the energy per weight ratio.
A car battery on a full charge for a 4 door sedan typically has about 4 million joules. Which is the same energy as half a gallon of gas. Half a gallon of gas is about 5 pounds and a car battery is about 50.
A car battery probably can't output more than 6000 watts which is 8.5 horsepower. You would need at least 10 of these batteries working in parallel just to get a small car moving.
__________________  |