Instead of focusing on Mars, it’s better (and cheaper) to try to improve living conditions on planet Earth, including curbing climate change. We need a Tesla 2.0. Since most energy is still being generated by burning fossil fuels, a 2.2 metric ton weighing Model S is dirtier than a hatchback with conventional motor. Reduce an EV’s footprint and weight, and you have an EV that people can afford without government subsidizing it. With governments all over the globe reconsidering EV grants, an affordable EV would signify a major boost.