I would say it's achievable, maybe some find it offensive, didn't realise that. Nonetheless, this is a good but expensive piece of kit. A prototype was made by a friend, a professor at Cambridge, for about £800. This was a motorised train lift system, very similar to the Nelevator, for 15 00 trains on each side. The storage levels constantly rotate, like a Ferris wheel, with a double length (18') version designed to also have independent storage. The system was successful and is now in the hands of Network Rail, used as storage for their basic training layouts in 00.