I think i saw Lewis's face change when he saw that Jenson's name was on the car and not his. Must be disturbing for him to see a worse driver having his name on the display car!
Which would be relevant if that had happened - but I highly doubt Lewis would give half a crap anyway, he's won a world championship. Why would he care that the other guy's car is the one on show? The other guy is the current champion, I'm sure Lewis isn't so dense and petty to not get it.

The Frome Flyer: Smoother, Smarter, Calmer,
Winner.
Jenson Button: Professor, Chauffeur, World Champion Racing Driver.