No doubt but you could probably guess what they were driving by the rings their women were wearing. Monaco has a way of invalidating any concept of wealth one may have had previously.
The thing I liked about MC, is that the "mere mortals" have little to no envy, like you have in other countries. Furthermore, they have no clue of monetary value of some things...
In the harbor, there was a fairly large yacht, I guess around it must have been close to 100m long (330ft). Next to us was a group of italians debating about it, and they concluded "it must have costed close to a million (euros)"... I snickered and didn't speak up