Yeah, it is. Bear in mind he gave up the vast majority of his salary as well as most of the perks, private jets etc that were previously available to him in order to stay with Brawn, but a $1m car is a hell of a bonus
Fair play to him. I think the issue with the car is that Mercedes didn't want to give a car to him now he was at Mclaren in case they nicked anything from it design wise.