The reason why I ask this is because the damage from batteries which have been spent and are no longer usable damages the Earth much more than the strait gas engines do. Now the hydrogen fuel cells don't have that pollution, but those kind of batteries aren't what they use.
pollution
Alternate fuel options for future vehicles?
It seems that the much touted hydrogen fuel cell won't be the savior that we once thought. It costs a lot of money to manufacture hydrogen, and it requires burning coal, which creates pollution (at the factory, not in the car), plus they can't store enough energy to make the car go over 50 mph. So what are we left with? Electric cars have same problem-storage batteries aren't sufficient to power a car for long periods of time. Solar power seems impractical (what if it's cloudy or raining?) and anti-matter is so expensive to produce it's nothing more than a pipe dream. So what will we use to power our cars in the future? Magnetic levitation? Nuclear fusion? Some technology on the drawing boards we haven't seen yet?
Ford Edge Hydrogen Fuel Cell – Plug-in Hybrid Vehicle
See a walkaround introducing Ford’s new test vehicle the Edge Hydrogen Fuel Cell – Plug-in Hybrid vehicle.
NEW Hydrogen Fuel Cell RC Car
a new development from Horizon Fuel Cell Technologies, creators of the H-racer (www.horizonfuelcell.com). Check out this 30km/h car straight from the future. For more info contact rc@horizonfuelcell.com