The premise of the thread is a bit flawed, but if you take it as is, it would apply more to older INTJs. When I was younger, I wanted inexpensive and simple cars that didn't stand out.
However, inexpensive usually means "cheap" and "unpleasant" and "a pain in the butt". Now that I am older, and can afford it, I own a car I really like. It is just the right size for me, it performs excellently, and since I really like it, I am not at all tempted to trade it in for something newer and better, which means that I'll probably drive it into the ground, saving money up until the point I am forced to get a new car.
It's also red. Red wouldn't have been my first choice, but it does have its practical advantages: it stands out, making me more visible on the road, and thus is indirectly a safety measure. A light gray/silver car (my typical preference) would have been much less visible on the road.