Innovation is a key to success when it comes to the future of transportation in South Florida. Two major types of electric vehicles, plug-in and hybrid, are quickly gaining popularity. Hybrid vehicles combine a fossil fuel source with electric propulsion, allowing flexibility. Plug-in vehicles are appearing more frequently, aided by significant investments in charging infrastructure by private companies. Tax benefits, fuel savings, and HOV allowances have all played major roles in attracting drivers to electric and hybrid vehicles.