Porsche unveiled the four-door four-seat Panamera at the Shanghai Auto Show. Apart from the long wait, the debut also represents the growing interest of automakers in the Chinese market. The Panamera reaches 5 meters in length, providing more space for luggage, at the same time ensuring that performance is not compromised.   Engine options available [...]

Most stock components in a production car can only be pushed so far. Keep adding horsepower and torque, and eventually…well, something is going to break. Some people, however, are all about exploring the limits. Take Tym Switzer, for example. His tuning company, Switzer Performance Innovation of Oberlin, Ohio has come up with a bolt-on tuning [...]