We need some thinking outside the box! May be we have been missing the big point! In my view the solution lies in our realization that the small internal combustion engine is too inefficient! Hold on, I am not done yet!! I would say look at the Diesel Locomotive Engine – it has all the answers.Diesel Locomotive Engine has an internal combustion engine but that turns electricity generation. The generator sends power to a motor for traction, at each axle, which powers the wheels.