Disagree. Many moneyed people don't buy fancy cars.
Really depends on their personality.
Some people want and crave the attention.
Some people don't.
I know some very wealthy people through work and they are a mixed bag.
But i can tell you that the people who have their shit together and operate their businesses the best are typically a little frugal.
A developer here that we do business with has more money than i will ever know. And he drives and old beat up Buick. Wears the same 3-4 shirts and the same shoes every single day. He's brilliant. Owns property all over town and just enjoys his life. Never stressed out and very easy to work with. We saved him half a million by doing some creative value engineering on one of his huge projects and he cut the owner of the company i work for a check for $100k. Crazy.
Another guy is younger with money, drives a Bentley with his company name as the license plate. This guy is a total douche nozzle and doesn't like to pay his consultants. But everyone in town treats him like a rock star. He has stiffed so many people on his development projects that he can't find contractors to build his stuff. Currently there is a warehouse project that has been halfway built, but the contractor and engineering team walked in December due to non-payment. Not a single contractor in this area will even talk to the guy. So he's a bit fucked, but doesn't care because he has money.
When i worked in Houston i knew the CEO of one of the largest Architectural firms in the USA. They do over a "billion" dollars worth of projects every year. He dresses really nice, but it's all cheap stuff. Drives a 4-runner. If you met him you would never know he's successful. Very quiet and soft spoken.
Typically the "show off" people are the types that lust for attention, which is apparent all over the world.
Just depends on how you get your rocks off i guess. I stopped caring what people think a long time ago.
If someone wants to drive a nice car that's fine, but to think this is a sign of success is quite stupid.
I know a lot of poor people who drive very nice cars.