http://www.daimlerchrysler.com/dccom/0-5-7165-1-457362-1-0-0-0-0-0-8-7165-0-0-0-0-0-0-0.html
The Mercedes-Benz E200 NGT and the smart fourtwo cng were also entered, both running on CNG. The E 200 NGT reduces CO2 emissions by over 20 percent and with a power output of 163 horsepower from the 1.8-liter engine. It is the most powerful CNG passenger car currently in production. The driver can decide whether to use CNG or gasoline using buttons on the steering wheel, and an electronic control unit ensures a smooth transition from one power source to the other. Fuel consumption is 39 mpg with CNG and 26 mpg with premium unleaded.
The owner can challenege anyone in pakistan, he can simply kill the new civic or altis ON cng