2. He has stickers all over his car...
Stickers do exactly two things: 1) they advertise the fact that he spent a ton of money on a car that’s worth about 1/3 of what he has “invested” in it, and 2) they highlight his desperate need for recognition and approval.
3. ... and knows next to nothing about it
Fun fact: most people don’t know whether their car is front-, rear-, or all-wheel drive, and so few drivers ever check their oil that the dipstick is officially an endangered species. If you ever hear a Porsche owner talk about the V6 under the hood,* they’re a poser, and it’s not considered rude to turn your back and walk away.
*Technically, a few Cayennes came with a diesel V6; but someone driving a diesel Cayenne likely wouldn’t claim to be a car guy in the first place.