Under USB Connect in ATV Offroad Fury 4 PS2 I found that you are able to transfer both tracks and ghosts. I am unsure what the game means by ghosts as I only started to play it. I can say once you achieve certain goals in the game it is possible.
It seems both these games have truly hidden secrets. Jax X PS2 can actually scan your PS2 Memory Card for saves of any previous Jax and Daxter games which can unlock secret characters. I want to make this very clear you can't do this from the start of the game. Tracks must be completed of you can get the save for Daxter, otherwise, you can get it from here
Daxter Secrets
Connect Daxter to Jak X Combat Racing for the PS2 and you can unlock the option to toggle whether or not Daxter wears his goggles over his eyes.
Jax X Secrets
Connect your PSP with the Daxter game to the PS2
Kaeden Scan for Secrets in Secrets Shop
Osmo Scan for Secrets in Secrets Shop
Taryn Scan for Secrets in Secrets Shop
Ximon Scan for Secrets in Secrets Shop
Daxtermobile
Connect the PSP game, Daxter to the Jak X: Combat Racing via a USB cable. You’ll unlock the Daxtermobile in Jak X: Combat Racing and other goodies for the Daxter PSP game.
Really except for finding that Gran Turismo 4 can take from GT3 game save turns out these 2 games cannot be connected.
