In their new Development Update number 4, AirportSim gives the comprehensive list with more details of all vehicles that can be operated in their PC game to be released this month, on October 19th.
Even if you tried their demo, you could not test the following items that were not included, so you will be particularly interested in reading their notes on the animated jetway, the refueling truck operations with safety advices, and the various models of pushback tugs that you will drive !
AirportSim is a standalone game for PC Windows developed by several teams including SIMMARKET partner MK Studios who worked for example on the 3D airports that include Warsaw Chopin and Keflavik.