Found a GT4 Mobile listing

[Alutec]

https://www.play-asia.com/gran-turismo-4-mobile/13/704lt

Basically GT4: Mobile was going to be a thing for the psp back in 2005 but was never released and after casually doing some research I stumbled upon a listing for it and thought I'd share. (Still unsure if the images were from the PSP version. IF it was even playable)

 

[pez2k]

The images are all from the PS2 version, I don't think PD ever really had GT4 running on the PSP. The GT4M idea was replaced by Gran Turismo for Boys, a simplified GT experience, which eventually became just Gran Turismo on PSP, based more on GT5 than GT4.