I've got no idea of the process involved, but... why not just bring the car into Switzerland with your "tourist hat" on? ie drive on up to the border, show a non-swiss passport, say (if they ask) that you're on holiday and just passing through, ... and then leave the car in Switzerland?
The only generic problems I see are that:
- will the car still run after sitting in a garage after three years, and
- is it still warranted/registered/insured after all this time? Could you drive it through several country borders in its current state? Will your current insurance cover you if you have an accident driving from Macedonia to Switzerland today? Would a vignette be needed?
- maybe the legalese is a nightmare and maybe it is worse to keep it in CH rather than out of the country - I really don't know. In that case then sneak the car into eg Germany the same way that you brought it in, with a "tourist hat" on, and store it there while you figure out the next cunning plan...

Just my $0.02...

Sam