The Audi A8 by Project Kahn fits the bill perfectly. Before you go over to check the engine specs, just get to know this - A new electric module by Kahn to the 2.8l gasoline engine makes it highly efficient and it emits just 199g/km of CO2 which is on an average 11g/km less than the competition. That figure is also helped by the all-aluminum body construction, which reduces the load on the engine.
The standard special features include 21-inch F1-X Carbon Fiber Edition wheels, FWD, paragon tinted windows, Audi Space Frame aluminum body and adjustable air suspension with four-settings to give you a comfortable ride regardless of whether you are in the Autobahn or Ahmadabad.
The Project Kahn A8 has left all competition on the sidelines when it comes to eco-friendliness. Kahn's Audi A8 is the most environment friendly luxury vehicle in the market today. The car can accelerate in 8 seconds to 62 mph from standstill.
2009 Audi A8 Project Kahn Image Gallery
Source- 4 Wheels News