The Solar Energi Concept is basically a Ford C-Max Energi plug-in hybrid with a few tweaks to allow it to charge its own batteries. The regular C-MAX Energi can be driven like a normal hybrid or charged using a 120V or 240V outlet to allow it to run up to 21 miles purely on electricity. The Solar Energi Concept adds 275W of the highest efficiency mono-crystalline solar panels to the top of the vehicle. Solar concentrators are installed above the vehicle’s regular parking spots to boost the amount of solar energy captured by 8 times and the car is able to reposition itself as the sun moves in order to maximize charging. These techniques allow the car to fully replenish its batteries within a day (assuming the parking location receives an average amount of sun).