The point is - it's neither one nor the other: Combining working fuel cell technology with batteries really gives the best of both worlds: - Batteries are the

The point is - it's neither one nor the other: Combining working fuel cell technology with batteries really gives the best of both worlds: - Batteries are the most efficient in the long run and very dynamic at power release, but they are heavy (more than half the weight of Tesla's truck is the batteries), use lots of rare resources and take pretty long to recharge. It's getting better, but if you really want to drive a few thousand miles with short fuel breaks in an emergency, you can't. - Hydrogen fuel cells suck at dynamic release, they really want to have a constant power draw. They're less efficient than batteries, but you can refuel quickly and don't have to carry the fuel weight with you all the time. Taking all the technical challenges of storing hydrogen and making efficient fuel cells aside for the moment, combining the two technologies is really awesome in a way. You can get rid of two thirds of the batteries — and suddenly you have a car that's all of: easy to instantly refill, still dynamic to accelerate and overtake on the highway due to the batteries, but you also just have to dimension the fuel cell for average, not for peak power draw. Considered the hydrogen is CO2 neutrally generated, it's really the optimum solution.