If you look really close on the side of the Nike One, you can see a small area near the front of the car of morse code. If you go into photo mode, this will become clearer. The morse code is written backwards as to be seen correctly from inside the car. Spelled out, it is " www.Phil-Frank.com " the website of the Phil Frank Automotive and Product Design Company. Phil Frank was paid to design the futuristic Nike car specifically for Gran Turismo 4.
Credits and licenses
Have a saved game from Gran Turismo 3 or Gran Turismo 4 Prologue to start with extra credits and some of your previously earned licenses.
Faster credit reward screen
Hold L2 to load the credits faster. For example, when you win a 45,000 credir reward, holding L2 will make it load much faster. Doing this trick on a 10,000 credit prize will make the numbers disappear completely off the screen in about one second.
Acura DN-X '02
In the A License, get all Silver or better (US version).
Alfa Romeo 155 2.5 V6 TI Race Car '93
Win the Italian Festival.
Alfa Romeo Giulia Sprint GTA 1600 '65
Win the GTA Cup at Alfa Romeo in the Italian showroom.
Alfa Romeo Giulia Sprint Speciale '63
Win the 1000 Miles.
Alpine 1600S
Win the Alpine Showroom cup.
Alpine A310 1600VE '73
Win the George Paris.
Aston Martin DB9 Coupe '03 (Super Gold special color)
Win the Aston Martin Carnival at Aston Martin in the British showroom.
Audi Abt Audi TT-R Touring Car '02
Win the Nurburgring 4 Hours Endurance.
Audi Le Mans Quattro '03
Win the Tourist Trophy at Audi in the German showroom.
Audi Nuvotari Quattro '03
Complete 25% of the game. This car has 608 hp, 4WD, and cannot be sold or bought.
Audi Pikes Peak Quattro '03
Win the A3 Cup at Audi in the German showroom.
Audi R8 '01
Win the Sarthe Circuit 24 Hours I.
Autobianchi A112 Abarth '79
Get all Golds in all the races for the Sunday Cup.