I have a cousin called Harley Davidson - I kid you not. I don't mind it too much, because Harley on it's own is fairly innocuous - I would never call a child Holden though kwim? As for Chevrolet, I went to school with a boy called Chev, middle name Row, last name Lay, so when it was all said together it was Chev Row Lay, but you rarely get called by all 3 names so 99.9% of the time it was just Chev Lay.

I wouldn't use it for any of mine, but I don't see how it is a great deal different to Mercedes or Porscha really.