Mercedes Ener-G-Force Concept
Yes, it's definitely intriguing. But unfortunately for anyone wishing to park one in their own driveway, the Mercedes Ener-G-Force Concept ($TBA) is about as concept-y as a vehicle can get. Created for the Los Angeles Design Challenge 2012, the Ener-G-Force was designed as a highway patrol car for 2025, it boasts such outlandish features as a tank on the roof to store water that's transferred to the "hydro-tech converter" where it's converted into hydrogen for running the fuel cells and a 360-degree topography scanner on the roof.