The Green Lantern'sEMERALD THUNDER
Check out the whole set
What kind of car would The Green Lantern drive. Accoding to the cinema film he likes muscle cars (just like the one he drives in the beginning of the film). Also he likes speed, preferable airborn with a touch of toy character.
All this melted together in this concept. A viper-ish shaping with lots of muscle. The canopy and the CC-wheels create a futuristic touch. The automated plasma gun gives it the deadly finishing.
The two iconic lanterns at the front permanently create a temporarily road (just like in the scene when he rescues the heli with a sourrounding car and the hot wheels-like road), which appears just in front and vanishes as soon the car has passed. By this the car literally rolls through the sky and beyond.