If I were a wealthy man I would probably buy one and just stick it in a warehouse.
Someday having a mint condition Volt might pay off nicely, a whole lot of fame for darn few vehicles. Heck, Ming vases use to be a dime a dozen at one time too...
Your warehouse would burn down....
Just make sure there is nothing else in the warehouse of any value. If the damn thing burns up all will be lost.
I doubt you can disconnect the battery. Probably some serious amperage there.