So a 2010 car is older?

Don't obsess over "older." You've gotten good advice from others here already: try to keep your "older" car alive. Every year you keep it looking good and running well is another year of your life that you won't be saddled with new car payments, higher insurance premiums and high-tech repair bills. As soon as you own a car whose headlights cost more to replace than the price you paid for your old 4-wheel friend, you'll know you've broken the bonds of sensibility and have reached the outer limits.

Limit the number of "turnovers" of car ownership in your lifespan and you'll have that much more to invest in growing assets--not in wasting assets like cars and RVs. The payback: early retirement, and many years left for becoming the person you really wanted to be while you were slaving to keep up with a mirage as it recedes farther and farther toward the horizon. Just my 2 cents (maybe a tldr half-buck's worth. :)