Unfortunately, that driver is about to find out what "two party consent" for recordings means.
I'm ... fare-ly ... certain certain this law does not apply to recordings for security purposes in a place of business; the vehicle being the place of business of the Uber driver. EDIT: Er, scratch that. Didn't realize there was audio attached. I think audio might be the incriminating factor in the two party consent thing. I mostly just wanted to make a bad pun.
However, CA does make an exception for recording "in any other circumstance in which the parties to the communication may reasonably expect that the communication may be overheard or recorded."
You could certainly make an argument that this douchebag might reasonably expect audio to be recorded in his company's driver's cars. Not so sure you could make that argument for the other passengers.
Interestingly, Bloomberg could be sued (or prosecuted; $5000 fine) for distributing the recording if it indeed falls under CA's wiretapping laws.