Koenigsegg Quant is a planned four-seat Swedish made sports car. Quant uses an unusual layout with two large gullwing doors providing access to both front and rear seats. Power comes from 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. Koenigsegg Quant sports car was unveiled in 2009 Geneva Motor Show.