I only know:

1. Construction business family with approx. net worth of RM100mil+ who drives a Porsche.
2. Plantation business with approx. RM200mil+, drive BMW and Merc only.
3. Director of a Tech company with RM100mil+ net assets and RM1mil p.a. salary but drive old BMW.
4. B40 colleague who drives his dad's RM150k car to show off.
5. People renting cars to balik kampung.

Tldr; the car you drive does not really have to do with your income. Most wealthy people prefer to be lowkey.