Not to disappoint, but car model names and numbers are made up by marketing people and typically don't actually mean anything. The marketing people pick names that sound cool and will hopefully help sell the cars. Cadillac, for example, used to have names like Seville and Eldorado but those names appealed to old people. Now, to attract younger people, they've changed to CTS, DTS, STS, and XLR -- which don't mean anything.
