Way back when, Tucker made a car with 3 headlights. That wasn’t the genius part though. That happened because the center headlight swiveled to follow the steering wheel. You turned the wheel left or ...

It's a story as old as hot rodding itself. It starts with the sales pitch-"Buy my widget and your engine will gain 50 hp"-and ends with a disappointed customer with a car that sure doesn't feel like ...

When analyzing the function of our favorite test tool, the Dynojet dynamometer, horsepower is measured by the rate of time a vehicle takes to spin the Dynojet roller, based on the roller's weight. A ...