This was driving through Utah to Washington in my 1968 Mercedes 200D daily driver. It only has 55 horsepower but it will go 70-75 MPH on the freeway comfortably. It's worth it for nearly 40 miles per gallon. I use B99 biodiesel most of the time and am very happy with the performance.
mercedes, benz, 110, w110, 111, w111, heckflosse, fintail, tail, fins, classic, car, biodiesel, alternative, fuel, retro, automobiles