No mileage limits! Please feel free to take it on long trips, at no extra cost per mile.
You can charge the car for free at Tesla superchargers. In the trunk, you will find cables and adapters, that can be used to connect to different charging systems. Details here: https://www.teslamotors.com/models-charging.
The car will be charged before pick up. No need to charge before returning it. You can return it "empty".
This is a Signature P90D Tesla Model X with autopilot and insane mode. It has Pearl White paint, Panoramic windshield, Ultra white 7 seats, 17" touch screen, Tech Package, GPS and Ultra High Fidelity sound.