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From the gloriously fertile mind of Frank Rinderknecht comes the Rinspeed iChange, a shape-shifting zero-emissions concept car. As its name suggests, the iChange actually morphs its body shape depending on how many people are going to be onboard, thus optimizing its aerodynamic profile around the passenger load that is called for.

The Swiss auto designer's creations have always been a highlight of the Geneva Motor Show, from outsized roadsters with crazy paint jobs to cars that run on garbage and have tilting occupant cells to exoskeltal minimalist roadsters to Lotus Elise-based roadgoing submarines. Next month, we expect the iChange to be no different.

In the main, the lightweight (1,050 kilograms, or 2,315 pounds) zero-emissions iChange starts off as a one-seat sports car that is capable of changing to a three-seat coupe thanks to a pop-up rear end.

In the drivetrain department, the iChange is motivated by a 150-kilowatt motor, whose power is routed through a six-speed "pre-selector" gearbox which Rinspeed says is borrowed from Subaru's WRX. Juice storage is provided by one of two stack configurations of lithium-ion batteries, depending on whether short- or long-distance driving is planned. So-equipped, the iChange will whir its way to 100 kilometers-per-hour (62 miles-per-hour) in just over four seconds, topping out at 220 km/h (137 mph). The car's pure-electric drivetrain is further supplemented by a roof shingled in solar panels, which generates power that is stored in the batteries and also helps operate cooling fans to vent the interior.

[Source: Rinspeed]