Classic forum thread, zero value, let us do it anyway.
2019 Golf. Bought used, paid cash, and I am aware that is the least interesting answer possible from someone who spends six figures a year on ads.
The honest reason: the first year I made real money I nearly bought something stupid, and the only thing that stopped me was a thread exactly like this one where everyone sensible was driving a hatchback.
Paid traffic is just SEO with a faster feedback loop.