A new car is often seen as a status symbol and so someone who has had the same car for a long time while their best friend has a new one, would not be delighted but would feel envy and resentment.
Consider the statement "My best friend just got a new car and here I am driving the same car for 10 years.  Ugh.". Based on this "It delights me that my best friend just got a new car and I'm still driving the same one for 10 years" a true statement? Yes, no, or I don't know?