I tend not to think of any vehicle that a normal person can afford as a good investment. You may make money on your cool car, but you shouldn't count on it. This 2011 Cadillac Escalade that has never seen a drop of rain in its 12 years of existence might be the exception to my rule. A fully loaded example, it has technically never been owned or titled before. Built on January 18, 2011, it was purchased directly from Cadillac, and put to use as a company vehicle for the factory.
It's kind of hard to know what that means for a vehicle like the Cadillac Escalade, though. While a Lamborghini or other supercar of the same vintage would likely fetch big prices at this mileage, the Escalade is no limited run model. As one of Cadillac's most popular vehicles, it rides the line between luxury vehicle and mass market appliance. That's reflected in its KBB value, which is $12,000 - $13,000.