Electric cars have been around for a long, long time. The first ones appeared in the mid-19th century. Around the turn of the 20th century, they were popular for taxi cabs in places like New York City. But within about 10 years, they mostly disappeared. In the 1990s, electric cars had a brief revival with vehicles like the General Motors EV1. But again electric cars mostly vanished.
The transition to sustainable energy sources faces many challenges. One important one is to make those sources as reliable as conventional energy systems. For technologies like solar and wind power, which can’t operate around the clock, an enabling element is effective energy storage. Energy storage is critical for both the electricity grid and for transportation.