>Expensive cars are mostly about status signalling

Uhm, only if you are counting the most basic utility, then you're right.

However if you actually enjoy driving (A->A driving), there is a HGUE difference and it's not just signaling. It's that you probably can't tell the difference, or don't care.

There is no comparison between driving a new Porsche or Bentley vs a new Toyota or even a Lexus.