The car, van, fire truck and pushback tug were stacked boxes. The car is now an
operations SUV (rounded body, glass house with a sloped windscreen, roof light
bar, grille and lamps), the van a high-roof panel van, the fire truck an airport
crash tender with roof and bumper turrets on three axles, and the pushback a low
chamfered tug with a glazed cab. All stand on the ground at their built size.
Their trail anchors are measured again.
121 GLBs under public/models/fleet (about 2 MB, MIT like the code) with
catalog.json and types.json. src/data/fleetModels.js picks a model by ICAO
type, aircraft class, emitter category, AIS ship type and size, GTFS route
type, transit mode or rail category, and sizes it life size; the set loads
once, up front. Trail anchors are measured from the meshes.