My new TV has run flat tires and no spare. Supposedly, it'll carry you 50 miles at 40 mph (or is that 40 miles at 50 mph?). The downside, of course, is that although it'll go that far on a "flat," the tire is ruined by the experience, and since they cost $300-$400 apiece, I'm not crazy about driving on 'em flat.
I'm sorta thinking, I already carry a compressor to make sure all TT and TV tires are properly inflated, maybe a plug kit would be a good idea as we drag the rig around the middle of nowhere.