OK, so the first part of the word is:
Not a name that has been used by Ford on any other car, which rules out names like Galaxie or Thunderbird
Not an animal, so that rules out anything like Mustang
Not a place, so that rules out anything like Milano or Monaco
Not space-themed, which rules out anything like Venus or Zephyr
Not Latin/Italian so it's probably English
Not a person's name, so rules out anything like Edsel
Not related to speed so that rules out any words like Jet
Not a bird, so anything like Eagle is ruled out
Not a body type as the other part of the word is already that.
What's left? A made-up word or one that would be in a dictionary, like Excel for instance?