Cars today put out a lot of pollution, and use up fossil fuels. Predictions are that hydrogen cars with combination of solar and electricity source, are the future of transportation. Device that is the size of microwave oven may be all you need to fuel your car in the future. Using small device, hydrogen can be easily and cleanly extracted from water and power family car for up to 150 kilometers.
Elon Musk and other entrepreneurs are pursuing alternative ways to operate machinery and vehicles. Nikola Tesla inspired a lot of this work. Some of the results we are seeing include self driving trucks.