2. eRinGo Concept Car
The eRinGo electric concept car is a ring-shaped vehicle that has a large wheel running around its center, while two medium sized wheels are present on each side. When the car is in motion, these wheels help it across turns, and when the car is still these wheels extend to provide balance and support. A rotor/ gyro system in the car helps it maintain balance on the single wheel. The two seater concept has steering wheels for both passengers, allowing either to take control.