I am doing a science fair project. In this I am making a 6 volt remote control car which is solar powered. I cannot find any 6 volt solar cell. I was wondering if I can use three separate 2 volt solar cells for my purpose. How can I use three 2 volt solar cells to power 6 volt remote control car? I would really appreciate useful information from you guys out there. I hope to hear soon from your side. Thanks.