Toyota testing hydrogen combustion engines in race cars

The use of hydrogen as fuel comes with some risk concerns, but hydrogen fueling stations are operating across Japan, with no major accidents so far.

Toyota said Monday it is testing hydrogen combustion engines in race cars as it works toward using the technology in commercial products.

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Such engines burn hydrogen as fuel instead of gasoline, much like rockets. The Japanese automaker said testing the technology in race cars will allow it to collect data and try to fix problems on-site.