Electrification may be coming down the line eventually, but these cars with high-revving engines show that internal combustion isn't going anywhere yet.

LiquidPiston’s flagship innovation, the X-Engine, builds on the principles of rotary engines but with a transformative twist.

Jon Hall and Motor City Flatheads built a ’33 Ford to serve as a show-car testbed for their new all-aluminum Flathead V-8 ...