A side-by-side drag race shows how much Formula E has improved its cars over the past five years.

Formula E is still in its infancy as a sport. After four years with the same car, it's moving to a new vehicle for season five.

Chief among improvements is battery life: at the moment, drivers need to swap cars halfway through a race. Come next season, they'll be able to last the full distance.

The cars look meaner, too. To show that, among those improvements, the new cars are much, much faster than before, Formula E has put the Gen 1 and Gen 2 cars side-by-side.

Check out the video below to see how far electric racers have come in five years.