Personally, I've claimed it has more to do with socio-economic status. So, while there are plenty of stories about well off !white guy being hassled in his own neighborhood, it happens a lot less to people wearing business attire. OTOH, poor white people get hassled at 2AM too. I had white friends in HS who were routinely stopped and searched for drugs by the police simply because they were driving back from their 2AM fast food jobs in their beater cars while cutting through the nice neighborhoods.

So, the police definitely judge you and if you come across as a well off member of society your much more likely to be treated well. I've gotten pulled over for a fair number of traffic stops in the past ~20 years. Overwhelmingly I've never gotten a ticket driving a higher end vehicle with the wife/kids present. OTOH, driving the old clunker by myself, 100% hit rate.

[0] https://en.wikipedia.org/wiki/Shooting_of_Justine_Damond