I noticed hella Detroit people got the same type accent as Cali folks
I heard Detroit people say Bay Area/Cali music was always big in the D because the accents were the same and the love of Funk music is deep in both places.
There are black people in the Bay with the same accents as black people in LA with the hard “r” sound in everything. But not everybody sound like that. Black people in Cali got roots in Texas, Mississippi, Louisiana etc.
The "r" is very Cali-esque