This was one of my favourite PS2 games.
Funnily enough, it was also one of the few games you could use to hot-swap
homebrew code onto the PS2. If you replaced DRIVING.ELF on the disc with an
ELF of your choosing, then started a driving mission, it would run the code
without any checks. Using this method, I burned a copy of Nightfire to a DVD
where the driving file was replaced with uLaunchElf, which then allowed me to
run the FreeMcBoot installer off a USB stick.