The DOK-ING Loox (previously known as DOK-ING XD) is a small Croatian three-seat electric city concept car created by DOK-ING. The name XD came from oddly shaped rear lights ("X" shaped) and "D" beginning letter of the company's name.(they've changed the name since then) Loox can travel over 250 km on a single charge with lithium iron phosphate batteries. The car has a low drag coefficient factor of only 0.35.