If you want to store it for long term, you need to keep it cool 60F and dark, cycle the battery once in a while, still getting the battery to last until it is a classic will be nearly impossible, also don't forget GM is going to build a bunch of Hummers, not so rare once production kicks up (Past Hummers do not sell as classics unless they are special). Save a C8 Z06 would be a better bet, as there will not be many, and those engines will be the last of the high revving N/A, more desirable to collectors.