In 2018, a Brazilian surprised the world with the idea of **a motorcycle that ran on water**. Faced with the rise in fuel prices, he designed a system that **separated hydrogen from water** to power the engine. The promise: to travel up to 1000 km with just one liter.
The invention arose during a truckers’ strike that drove up **fuel** prices in Brazil. This context was key to promoting a more economical, accessible, and theoretically clean alternative. The motorcycle, adapted with a homemade reactor, quickly caught attention.
Although it caused a stir on social media and in the news, **it was never scientifically validated**. There were no patents or technical studies confirming its efficiency or safety. Since then, the invention has remained silent, and no further developments have been known.
Experts agree that **direct use of water as fuel** is still not viable without complex processes. Even so, the proposal reignited the debate on clean energies and the use of hydrogen as a sustainable alternative.
## Hydrogen and Mobility: An Expanding Field
Sandro’s idea was not an isolated case. Around the world, vehicles are being developed that use **hydrogen** as an energy source. Although the process requires electricity to separate hydrogen from water, technological advances point to greater efficiency.
One of the challenges is the production of **green hydrogen**, that is, generated from **renewable sources**. This would allow vehicles to be powered without emitting polluting gases and without depending on **fossil fuels**. Several countries are already testing this technology in buses, trains, and cars.
The main obstacle is the infrastructure: charging stations, secure storage, and an adequate supply chain are needed. Nevertheless, **hydrogen-based mobility** is advancing and could be a key piece of the global energy transition.
## Vehicles that Can Be Powered by Water Today
Although water is not used directly as fuel, there are technologies that harness the hydrogen it contains. Buses and trains powered by **hydrogen fuel cells** are already in operation, emitting only water vapor as a residue.
Automakers like Toyota and Hyundai market hydrogen-powered cars, and Japan is testing ships with the same technology. In Europe, several regional trains use hydrogen instead of diesel, **reducing emissions** without the need to electrify the tracks.
In the case of **light vehicles**, such as bicycles and motorcycles, there are experimental prototypes. Although not yet common, these innovations show that water, or rather its hydrogen, could play an essential role in a **cleaner and more resilient mobility**.
