Solar Panels charge battery bank, which power an air compressor. Ignition opens air valve to air tank to begin pushing pistons. Pressing the air (gas) pedal opens the air intake creating more PSI to push the pistons faster. The air leaves through the exhaust, or can run through a turbocharger system. The engine runs a belt driven generator to recharge the battery bank at the same time as the Solar panel. A fan helps cool the compressed air tank..