I have to agree with Hagit for a bit. He was a prince and spoiled. Levaing a car outside means nothing substantial.
I think Michael observed the car as he returned because it was outside. This meaning that it was used throughout Christmas and the kid, Anthony, probably had fun playing with it. However, Michael was not there for it - for his son's happiness. Moreover, it seems he's "losing the family" as he's not alwasy there for them? Just my 2 cents.