Pop the hood on a classic Mazda RX-7 or RX-8 and the engine bay looks oddly empty. That is the charm of the rotary engine: a compact lump of metal that trades pistons and valves for a spinning ...

In case you missed it, the automotive industry has been on a steady trajectory of internal combustion engine (ICE) downsizing for years. Battery-powered electric vehicles may capture most of the ...

The engine produces 450 horsepower by burning hydrogen, and thus has no direct carbon emissions. Unfortunately, there's a big problem with hydrogen combustion vehicles, as this video will demonstrate.