THINKING ABOUT BUYING MUSTANG TO STORE...

Very poor investment. The only ones that may be worth it would be the super rare ones, like the GT500KR and GT500SS. Barret-Jackson did a great job of inflating classic car values, but if you look at selling prices over the last few years, they've gone down quite a bit. What would've fetched $100K+ on the auction block is fetching $30K-$50K. While we can't anticipate what we'll be driving in 30 years, nor what the used car market will be like, it's impossible to say whether you would come out on top, but it's about as risky as investing in polar ice caps right now.

Bad idea. Buy the car and drive it. Keep it in good shape. You will come out much better in the end.

If you are looking for pure financial gain, it is a terrible idea. I don't see any way that you could make money on a run of the mill GT. Say you spend $30k on a new one and pay cash. After 20 years, that $30k would've been worth $40,400 if you left it in a savings account with 1.5% interest. Keep in mind, that is a very low interest rate and it would likely be higher average over that long of a time period. Now add in the cost to insure the car for 20 years. Even with bare minimum coverages, you'd still probably spend maybe $500/year average to insure. That's another $10k, and again factor interest you COULD'VE earned on the money you are paying along the way, and that makes it more like a cost of $12k. Let's just forget maintenance costs and the cost of the space you are using to store the car.

So far we are at around $52k to break even, without maintenance costs. If you have to finance the vehicle, that makes it even worse. That is for a 20 year time period. 30 years adds another 15-20k to that.

Now let's look at what run-of-the-mill GT's are worth that are 20-30 years old. This is a bit harder, but ebay and whatnot can help...
1991 Mustang GT Convertible, 25k miles: $12,888
1988 Mustang GT, 1500 miles: $10,500
1988 Mustang GT Convertible, 10k miles: $17,500
1979 Mustang Indy Pace Car, restored: $7k
1978 Mustang King Cobra, 130k miles: $7500
Even a 1993 Cobra w/ 45 miles is going for $24,500 (buy it now) - that vehicle's MSRP was right around $20k and only 5,000 were made in total.

Those mustangs values are low because they aren't collectible or desirable. They are just plain-jane old mustangs. In 20-30 years, so will a 2010. It has no special or unusual features, it isn't rare, and it isn't unusual. I don't even really see something like a Bullitt being worth much more, since really there is little difference between it and the stock GT. And I DEFINITELY don't see one of them being worth $50k+ to make it a worthwhile investment.

if your gonna buy it, drive it.