If your car comes with a spare tire, chances are it's a space-saving "donut" and not a full-size tire. Here are the pros and ...

Mattel's Hot Wheels Silver Series line is about to get another entry: this time, it's a mix of five hybrid cars that are by ...

Donut spun off from this innovation, set up to build these donut-shaped rim motors in a variety of sizes so as to ... easier retrofitting of electric motors to conventionally-powered cars. The suite ...