Crazy but cool, the Opel Frogster concept is not just a car, but also a Personal Digital Assistant (PDA) on wheels. Instead of a conventional convertible top, the vehicle has an electrically powered roller cover, and four individually configurable seats that allow the car to change from a one- or two-seat roadster to three- or four-seat convertible or pickup, all at the push of a button. A detachable PDA in the dash display serves as a display for climate control and navigation system, and also operates as a radio and MP3 player. Out of the car, the PDA acts as a radio-controlled "car key" and roller-cover operator. When it's time to park, the roller cover slides forward like a shutter to close the car all the way down to the base of the windshield. Cool.
