Low miles is great for the car, but bad for the owner. You miss all the fun. this is my 97 Mustang GT Convertible that had about 14k on it until just a couple of years ago. A ton of customs work, and it spent most of its time under a cover and getting rubbed on with a diaper. I only took it out to shows and the Dream Cruise.
A couple of years ago my PSA tested WAY up. After a battery of test and sleepless nights, we found the test was wrong, and i'm OK, but i saw the light. Its a car (truck)...DRIVE IT! Enjoy it. If you want an investment by stocks and bonds. I'm not saying do something foolish, but there are no guarantees in life, so live it.