I did read a bit of the book and was surprised to learn that the possible names for Fords new "Personal Car" were the Fordster, Fordette, Beaver, Detroiter, Hep Cat and the Wheelaway. One of the big shots at Ford, Lew Crusoe didn't like any of those names so he offered a prize of a 250.00$ suit to any Ford employee who could come up with a better name.
Alden R Giberson is credited with the suggestion to borrow from Native American lore and use the Thunderbird name. Crusoe promptly accepted it and Giberson got his suit.
Jeff