Honda has hydrogen car. Toyota has hydrogen car. gm is working on hydrogen car.
build a fire
hydrogen
Car batteries sometimes generate hydrogen gas during charging. If the battery is enclosed without air flow this hydrogen could build up to explosive levels and a small spark could trigger an explosion. When air flow is allowed the hydrogen cannot build up, making an explosion impossible. Note: this is ONLY a problem with car batteries, not dry cells or lithium batteries.
Catalytic converter.
yes a bad converter will make car stall
Hydrogen fuel cells are very expensive to build. They cannot operate below freezing. They require a large storage container. There is no infrastructure for refueling.
What does the converter convert a Cadillac to?
Can? Yes. Should you? No. It is illegal to drive a car that came equipped with a catalytic converter without one. There is no benefit to removing a converter from a modern car.
Yes, a car can be driven without a catalytic converter. However, it is illegal to drive a car without them because of emissions.
In the transmission
sounds like your torque converter is going out. If you need to build up revs to get the torque converter to pump enough fluid to pressurize the gears, your converter may be going out. Once you gets enough pressure, that is when you get the "kick" in gears.