Chauffeur

A chauffeur is someone who is driving a car as a job, specifically meaning a luxury car as a limousine or a "stretch limo".

Rich people often employ chauffeurs for driving them in their cars, and there are services offering limousines including chauffeurs for rent, very similar to, but more luxurious than, taking a taxicab.

In a rich household, it is not uncommon to have a chauffeur under your employ, much like the common housemaid or butler.