They are crated at the factory and remain stored in controlled conditions until they are dispatched to the dealer.
The factory crating and mechanical preparation for the storage assures the new scooter when unboxed is in new condition.
The resale value of a two year old model should concern the buyer.
In tenders I've managed, we used a clause "should be new and of recent construction".
A two year old Yamaha scooter would be of less concern than a 2 year old cheap Chinese scooter because things like the seals and gaskets are more likely to be designed for storage in a crate in a warehouse.
2001 Yamaha Zuma, DR Evo 68 cylinder, Leo Vince TT derestricted, Delorto 17.5 (#98 jet), standard aircleaner, RMS fan, Race CDI, Standard oiler and premix @ 75:1 Shell SX2, Doppler SR3 variator, RMS clutch, RMS R rear shock absorber and Pirelli SL26 tyres.