Remember that if you take a standard automobile and make it perform farm duty, those parts are likely to break, and quickly. For example, just look at the after

Remember that if you take a standard automobile and make it perform farm duty, those parts are likely to break, and quickly. For example, just look at the aftermarket for mechanical improvements for Off road vehicles. Jeeps and Trucks are already among the more heavy-duty vehicles on the road, and for true off-road use, many components need to be replaced. Rather than looking at the existing automotive parts, look at some of the aftermarket fabricators, and parts suppliers that are building out parts designed to replace the standard OEM ones. I agree with the premise somewhat, but more parts and more engines especially is a recipe for reduced efficiency. Take for example the power and capability of a large pickup truck, which gets around 14Mpg, but makes ~400HP and 400ft/lbs of torque. It weighs ~8000lbs, and can tow 10,000. It will handle fairly tough daily use with few failures. When towing 10000lbs, they still get around 9-11mpg. on the other end of the spectrum, a Smart Car might get 38 MPG, but it has 70HP and 68Ft/lbs of torque. It weighs 1100 lbs, and can support only 500lbs of total passengers and cargo. It is not capable of towing any load. The returns of towing/power with increasing scale are nonlinear. Large Semi engines will run to 1000000 miles, and produce very large amounts of horsepower and torque.