Isn’t this time to brief a writer, or a writer/art director creative team …?
From your description, it sounds like they don’t want to see too much reality … so why not do amy filming in a large studio, with gleaming vehicles and well-buffed “character” models/actors ..
You could acknowledges Woody Allen acknowledging earlier movies, with a riff on a character stuck in a grotty, scuzzy train (bus, family car – target market?) looking through a window at another vehicle / carriage slowly overtaking, where much more glossy and glamorous (so much so that it looks unreal, very attractive) people are enjoying an altogether more enviable life.
Comic details could stretch to overblowm brands, champagne and truffles, butlers … exotic service) all in a heightened colour-palette and presented in the client’s livery.
Of course a great music track: maybe a fresh instrumentation of a less-well-known but potent classical snatch of phrases.
Or you could just big up the jingly voice, spoken, chanted or sung …
OK maybe not!