Yeah, why can't they just say that for knees and other body parts? "These knees are guaranteed for 1,000 miles or 500 hours of trampoline time." "This appendix should refrain from bursting for another 10 years, then I'd look into a replacement -- or a removal, your choice."

I'd really like to see an estimate on my lungs, and how much life smoking trimmed from them, and how much I could possibly gain back given the right maintenance program...