i've got a problem. my two year old son is starting to talk. he knows the difference between cars and trucks (momies car, dadies truck). now he is starting to point at vehicles and say either car or truck. i try to keep him straight on what is a car and what is a truck, but with all the "crossovers" it gets him pretty . so what constitutes a "truck" for you? what is a "car"? im thinking the federal government has several things that defines a truck, like flat cargo area, ground clearance, there are several more, but cant seem to think of them.