One thing Hollywood likes is the limousine. You're not really important in a TV show or movie unless you have your own driver. The British programs are even more that way. Everybody from Jack the Ripper to James Bond seems to ride around in a limousine, at least part of the time. In Bond's case, it's more to get new orders or a reprimand, then he hops out and proceeds off in his Aston Marten.
Of course, then there were those Grey Poupon commercials. One guy hangs out the window of his Bentley and asks, "Pardon me, do you have any Grey Poupon?"
"But of course," the guy in the next limo replies.
How many private driven cars are actually on the road? Don't know, but it's probably small. How many do you even see at airports? Damn few. Most folks pile into some sort of shared ride shuttle or their local Uber service. Or maybe a taxi. None of these offer the exclusivity of that friendly driver who knows where to get a watch repaired or find a prostitute at two a.m.
Where am I going with this? I don't know really. I've been revisiting the Yes, Minister TV series. I just loved that show when it first came out. I still love it. and you would think everyone in the British government has a driver to whisk them around London. Without his driver, the Hon. Jim Hacker, MP would be completely clueless of what was going on.