Any stories about where the name "Phoenix" came from?
With this definition PHX actually makes since...
PHENIX - or PHOENIX - definition of phenix by The Free Dictionary
A fabulous bird that after a life of five or six centuries immolates itself on a pyre and rises from the ashes to begin a new cycle of years:
The original GT40's are about 5 centuries old... and the new version has wings ready to fly and it is ready to immolate itself on it's pyre (Ferrari, McLaren, Lambo's etc)... and begin a new cycle of years!