"Water Powered Cars or Hydrogen/Oxygen Powered Cars, using 100% water as fuel is real. By splitting water by electrolysis and creating hydrogen/oxygen gas, you can replace gasoline."
http://waterpoweredcar.com/
"Hydrogen/oxygen mixed gas, generated by electrolysis of water"
https://translational-medicine.biomedcentral.com/articles/10.1186/s12967-022-03443-2
"The process of splitting water (H2O) into its atomic components (hydrogen and oxygen) using electricity is known as electrolysis"
https://www.wikihow.com/Make-Oxygen-and-Hydrogen-from-Water-Using-Electrolysis
"Electrolysis is a promising option for carbon-free hydrogen production from renewable and nuclear resources. Electrolysis is the process of using electricity to split water into hydrogen and oxygen. This reaction takes place in a unit called an electrolyzer. Electrolyzers can range in size from small, appliance-size equipment that is well-suited for small-scale distributed hydrogen production to large-scale, central production facilities that could be tied directly to renewable or other non-greenhouse-gas-emitting forms of electricity production."
https://www.energy.gov/eere/fuelcells/hydrogen-production-electrolysis
"the electrolysis of water produces hydrogen gas at the cathode and oxygen gas at the anode.
However, the electrolysis of water is not simple and easy for many reasons."
https://www.embibe.com/exams/electrolysis-of-water/