the problem isn't that man, it's thinking you are good. I mean I guess you never drank before and had your whip. A lot of times you leave the bar/club/event/party and you're like man I am good I can drive home....let me let the windows down, play some music at a medium level, maybe get some greasy food real quick, I'll be straight.
Never know what can happen, but I've been fu*kin gone a number of times and me "thinking" I KNOW what I can do, I drove home. Of course I never been so drunk I can't find, locate, step into, and operate my car...
i've done it a lot, and i never go out and drink without a plan B. i'll either stop at my limit, have a DD, or have a place to crash till i'm good. anything else is irresponsible. if you've had more than a few drinks in a couple hours, you should know there's a strong chance you're over the limit regardless of how you think you feel. it's not rocket science. people with that type of money shouldn't even leave it to chance. when you're not rich you might not want to worry about leaving your car or calling a cab or something. but for somebody in his position, it's different.