Reflect back to your youth, what motivated you to attend a movie or watch one on television? Generally is was something mechanical. Cars, planes, ships and armor which took on a personality of their own.
Example, EAA's AirVenture is an air show centered around civil aviation, homebuilts specifically. But what draws a majority of the crowd...the Warbirds or aircraft that are SPECTACULAR in size, shape, speed or played a part in a military conflict. Concorde, Dreamlifter, An124, SR-71, U-2, Voyager..etc
Take that one step further..Observation, Training and Cargo aircraft do not get the notority that Fighters and Bombers get, yet they are as important to our military as homebuilts are to general aviation.
Cars, well, Herbie seemed to very popular. A certain black Firebird, made Smokey and the Bandit a hit. Even in old war movies a piece of equipment can become a leading character...the jeeps in The Rat Patrol. Herman Munster's hot rod wagon and Grandpa's hot rod coffin. The Rifleman's Winchester rifle...yes at one time models of guns were very popular and they are starting to come back.
Mechanical things seem to take center stage in comparison to animals or even people...like in SciFi movies...get the idea?