The Mercedes Simplex concept car, inspired on its original 1903 Mercedes-Simplex, is displayed at the LA Auto Show in Los Angeles, California, U.S. November 20, 2019. (Photo by Lucy Nicholson/Reuters)
The Toyota FCV Plus fuel cell concept car is displayed on media day at the Paris auto show, in Paris, France, September 29, 2016. (Photo by Benoit Tessier/Reuters)