Terribly unsporting, Jay. Car guys take pleasure in the presence of rare automobiles and strive for some common ground with their -often rarefied- owners. The sporting gentleman would have added his own quarter to the meter in hopes of alleviating further embarrassment to the owner. Though a sporting gentleman would have stopped short of offering his own monogrammed silk handkerchief to deal with the mess; one doesn't draw attention to another's embarrassment.
That said, the Maybach is a silly car (my thoughts in this post) and only a pompous ass would drive one; it invites class warfare. So I can't say I blame any of you. Thanks for the anecdote.