Our goal was to create an ultra-affordable vehicle at using proven and existing technology. Also, we wanted to produce a vehicle that would apply to the vast majority of the US population. Therefore, an alternative fuel or electric vehicle couldn't fit into our pricing scheme for the initial Elio. A battery alone could double the price of the vehicle and add to the product weight that would decrease our mileage capability. However, that doesn't rule these great options out if this technology becomes more affordable for future models!