if it doesn't get sold soon i'd guess it'll just do what the usual Calder's demo cars do - get transported to every show and either get abused on track (like the old skyline and supra, the new 9 sec supra and the old mrs2 turbo and teg turbo) or get trailered everywhere and just shown off like they did all the work, like the blue wide arch supra.
for the record i can't say i've heard anything good about Calders, the 1 guy i knew that backed them up now doesn't after something suspect happened to the car after it had just been serviced by them. also noted from the classified ads that last year's demo cars (fto and teg turbos, big power R33 GTR and Supra) magically dropped in power between adverts with the exact same parts on them (i.e. in their full page mag adverts for "CRD" the skyline and supra were both 1000+Bhp, flick a few pages forward to the classifieds and these 2 cars now magically had "just" 700bhp)
just my tuppence, going on other's experiences.