One thing that irked me slightly (and you probably thought about it too)...
"Your wife said you were taking a cab home"
The wife of Bruce Wayne, prince of Gotham? Known by Joe Public as the playboy billionaire who burnt down his own mansion? As expressed in Batman Begins, you'd have to go miles to know somebody who didn't know his name.
Yet this guy seems convinced that Bruce Wayne has a wife? Did she say she was the wife of Bruce Wayne (surely that's the only way he could have recognised Bruce as he was leaving). Would you not think "I didn't hear about a wedding". Unless they came in togther, which they don't. And this guy hands over a car that is worth more than his home to a random stranger, just because she says she's married to Bruce Wayne.
That guy needs to be fired. We need another scene where Bruce reveals that he pays that guys salary. "Oh, you should be able get it back. I own you."
This, however, might highlight something interesting. In the 8 years has Bruce given up on 'keeping up appearances'? Is this why someone like Miranda Tate (rumoured to be Talia Al Ghul) is able to infiltrate Wayne Enterprises, as Bruce isn't paying attention anymore (we can assume he doesn't have her vetted like Lau)? Maybe he has become such as social recluse that people have forgotten about him. But then why would he turn up at a Gala...
my brain hurts.