Airport modelling and airlines collecting have been very impressive. Even in the scale of 1:500  the airport building, airport GSE, airplane was made as realistic as it is like in the real world. Last time airplane was create with big wheels but later had been fix with real looking wheels. NOW airplane can even have door open like the current Lufthansa B747-400M Combi and Cargo plane "Nose Open Freighter" like Air France B747-400F. For airport, night lighting on runway and taxiway is possible.The future is bright for model aircraft collector or airport modelling. Lets hope the best will come....