....you cannot force him to have a relationship with you.
What I WILL say is give him some time...he's a newlywed still, and probably still in the throes of wonderfulness, squee and joyful happiness.
The last thing he needs is what he might perceive as an ungrateful brat demanding things and interfering in his life.
WRT the car, what exactly do you want? He's not obliged to give you a car.

