Koenigsegg Quant

The Koenigsegg Quant was a planned four-seat, solar-electric sports car. The vehicle was slated to use an unusual layout with two large gullwing doors providing access to both front and rear seats. Power was said to be provided by a "solar electric" system developed with the help of NLV Solar using a new type of lightweight battery technology called "Flow Accumulator Energy Storage" as well as a photovoltaic coating, used to capture solar energy. Range was said to be over 500 km (310 mi) on a single charge. Koenigsegg claimed the output will be 512 bhp and 715 Nm (527 lb/ft) of torque which will propel the vehicle to 100 km/h (62 mph) in 5.2 seconds and on to a top speed of 275 km/h (170 mph). The vehicle would have been considerably heavier than Koenigsegg's other offerings, with a weight of 1780 kg.

The vehicle was unveiled at the 2009 Geneva Motor Show. The basic design and technology of this car, with a notable exception of the solar power supply, were somewhat reincarnated in concept cars Quant E (revealed in 2014) and Quant F (2015). Beside their technical concept all three Quant showcars are being linked to the same self proclaimed inventor Nunzio La Vecchia, who obviously fell short on his promises of solar revolution of the defunct NLV Solar and now claims to be pursuing a revolution in energy storage with the NanoFlowcell company.