I wonder if your theory about the pickups applies to minivans...
If so, we should se a lot of Sienna's popping up, as the Toyota is a popular van. I wonder if there's anyway to check.
Odd thing is that you never meet Africans with names like Lashonda or the like. I knew an African man with the name pronounced Audrey. He was a rugby player. Of course, if you named your kid "Kofi", everyone would call him "cough drop".