From the Wallstreet Journal “Opinion Journal”:

A long time ago, almost all cars had evocative names—the Cadillac Eldorado, the Pontiac Bonneville. In that automotive galaxy far away, there was even the Ford Galaxie

via Auto Alphabet Soup: What’s in a Car Name? – WSJ.com.

1915 Cadillac Type 51

Of course, our CaddyInfo readers recall this article and that Letter or Numeric names are actually old-school for Cadillac.  The stylized names did not pop up until after WW II.