I have to admit that when that song came out I was still into the Woodstock album, bands like Blind Faith and Cream, and still lamenting about the Beatles' break up. I never paid any attention to Motown and I clearly missed a lot.
I hate to admit what my parent's called Motown (definitely not politically correct). I'll take Motown over rap nonsense of today anytime!
Marvin Gaye was from Washington DC. Shame his father killed him. Different theories, stories about how, why. Bottom line Marvin you are missed!