You do understand how PR works right? Facts are interpreted in ways to make the person look better. I very much doubt that any of these people have just 1 car.
Fair point. I should have mentioned that some (most) of those listed have more than one car --but from what I coud find (in other lists), the cars listed seemed to be representative of their other cars. Ellison has other rare cars, Ballmer another pedestrian car and so on. DiCaprio seems to buy anything with some ZEV cachet, but he's been consistent since the EV-1's, I think.
I mean, basically some people feel they need to be flash, others find their cars to be more utilitarian.