First of all it isn't that rare. Total production is up around 70-80,00o units I believe. BUT, I think its chance to be valuable down the road is pretty good. Its got a dual bloodline which I think helps its uniqueness and it doesn't look like anything else on the road. Now that I've gotten my XF's replacement (which I believe is a lot more common around my area than the XF) you can truly see how unique its (the XF's) design is. Some love it some hate it, I believe more love it but it definitely stands out. Truth be told if you hold any car for 30 years and keep it in pristine condition it'll probably be worth several times what you paid for it. Yes, even a Honda Civic 4 door sedan. Reason being cars like that are so commonplace they're rarely kept pristine, usually are dealt with like an appliance and rarely cherished. So 30 years down the road they've been so used and abused and finally thrown away that they're rare. The Mustangs that are now being produced in every possible collector variant will be commonplace because everyone buying one thinks they've bought a collectable and will try to keep it in collectable condition. All because the Mustangs from our youth are now extremely rare and valuable. Thats because they were used, abused and mostly thrown away with few surviving in perfect shape. The perfect example of even high volume cars being valuable and collectable is the 64 and 65 Mustang. I believe there were over 2 million produced in the first 2 years of production yet any model you have today even a lowly 6 cylinder auto is probably worth 4-5 times its cost new if its in perfect shape. First most important thing in my experience is originality and second condition. Retain those 2 and your car will go up in value with time. Just my .02.