 For extended range, a hydrogen fuel cell will recharge the Lithium-ion battery and a solar panel will power onboard accessories, such as interior lighting and the audio system.As the Provoq concept uses a hybrid powertrain it is based on the same GM Voltec platform as the Chevrolet Volt.The production car shares with the GM Theta platform with Saab which would get its own CUV, the 9-4X.