that connect Delhi with Thiruvananthapuram covering a total distance of 4,500 km via Mumbai and Bengaluru. In 2020, India planned to install 24 LNG fuelling stations along the 6,000 km Golden Quadrilateral highways connecting the four metros due to LNG prices decreasing in price. Japan, the world's largest importer of LNG, is set to use of LNG as road transport fuel. High-horsepower/high-torque engines Engine displacement is an important factor in the power of an internal combustion engine. Thus a 2,000 cc engine would typically be more powerful than an 1,800 cc engine, but that assumes a similar air-fuel mixture is used. However, if the smaller engine uses an air-fuel mixture with higher energy density (such as via a turbocharger), then it may be able to produce more power than the larger one burning a less energy dense air-fuel mixture. This is not easily achieved, since turbochargers are both complex and expensive. Thus for high-horsepower/high-torque engines, a fuel that creates a more energy dense air-fuel mixture is preferred, because a smaller and simpler engine can produce the same power. With traditional gasoline and diesel engines the energy density of the air-fuel mixture is limited because the liquid fuels do not mix well in the cylinder. Further, gasoline and diesel fuel have autoignition temperatures and pressures relevant to engine design. An important part of traditional engine design is designing the cylinders, compression ratios, and fuel injectors such that pre-ignition is prevented but at the same time as much fuel as possible can be injected, become well mixed, and still have time to complete the combustion process during the power stroke. Natural gas does not auto-ignite at pressures and temperatures relevant to traditional gasoline and diesel engine design, thus providing more flexibility in the design of a natural gas engine. Methane, the main component of natural gas, has an autoignition temperature of , whereas gasoline and diesel autoignite at approximately and respectively. With a compressed natural gas (CNG) engine, the mixing of the fuel and the air is more effective since gases typically mix well in a short period of time, but at typical CNG compression pressures the fuel itself is less energy dense than gasoline or diesel thus the result is a less energy-dense air-fuel mixture. Thus for the same cylinder displacement engine, a non turbocharged CNG powered engine is typically less powerful than a similarly sized gas or diesel engine. For