The Tesla Model X is a fully electric midsize crossover SUV, which combines high performance and zero emission. The available variants from 2018 are 75D, 100D and P100D, with the numbers indicating the size of the battery. All variants come in all-wheel-drive configuration, and with seating for up to seven if optioned up with two booster seats in the boot. Standard features include power steering, power-folding heated side mirrors, LED headlamps, LED fog lamps, automatic keyless entry, falcon-wing rear doors, 17-inch touch screen, AM/FM radio with Bluetooth and USB, leather seats, reverse camera, Wifi and internet connectivity, power liftgate, 19-inch alloy wheels, and air suspension. Optional equipment include enhanced autopilot, complete self-driving capability, auto-opening front doors, higher quality leather interior, Alcantara, higher quality exterior paint, better sound system, up to 22-inch alloy wheels, and a towing package including a steel tow bar and a 2-inch hitch receiver. Standard safety features include six airbags, collision avoidance, automatic emergency braking, blind spot detection and lane departure warning. Optional safety features include traffic-aware cruise control, auto steer and auto park.