A truck is a transportation machine that you can drive in order to move yourself, others, and stuff to wherever you can get with wheels. The difference between a truck and car is that trucks are stronger and have more dedicated space for stuff on the vehicle.
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Alternative Body Styles
Depending on the function of the truck, it could have a smaller body style. (Unless, it is intended for hauling large amounts of agricultural goods.) If a light duty vehicle is all that would be necessary in many situations, then a more efficient size might be better.
There are a couple examples of small body styles that are common to the rest of the world but not in North America. First is the coupé utility (basically the same as the Chevrolet El Camino), known as the Ute in Australia and New Zealand. Second the minitruck from Japan, as known as the Kei truck, which are being imported to the United States as light duty off-road vehicles in some rural areas. In both Australia and Japan, vehicles are right-hand-drive. Though, it might be legal to operate a RHD vehicle on US roadways, there is the issue of practicality.
A small modular design with standardized parts is probably more cost effective and still allows for vehicle type options.
Maintenance Concept Text
Tire Air Pressure
Windshield Washer Fluid
Engines have a lot of moving parts that rub against each other and create friction. The friction generates a lot of heat. When plastics get hotter and hotter, they get softer and eventually melt. When metals get hot, they get softer, which accelerates wear, and if hot enough, metals melt too. So cooling the engine is important. The engine is essentially a complex hulk of metal, so pumping water through it will cool it down. But water boils and freezes too easily- if the water turns into a gas, then it loses a lot of cooling ability- in other cases, a lot of pressure (from gaseous expansion or ice formation) will crack and break the solid parts of the cooling system (and the engine). So adding substances (like antifreeze) keeps the coolant system working in hot and cold conditions.
Another way to solve the heat problem is to stop friction in the first place. Lubricants are substances that have very low coefficients of friction so they generate very little thermal energy when rubbed together. By applying lubricants to the moving parts of an engine, less heat will be generated.