Well I have been looking into moding Driver 2 and using it on the PC. I even went down the track of putting the .map files into Driver's Engine, but of course it didn't work. As the games engines are significantly different.
So I have decided to emulate it, it's the only path I think we can go down unless we have lots of money to hire professionals to do a proper conversion, but in this case I think we would need access to reflections Hard Drives.
With the emulator I'm using at the moment it can read .ISO files.
If you want to mod the game you can extract the .ISO modify it and then import it back into a .ISO. Maybe we can find a plug-in which allows us to look at a directory so it's so much easier.
The developers usually write to a disk that the xbox or ps2, in this case ps1 can read every single time they want to test the game, because emulation is a bit jumpy.
But I was playing the game on my pc and it works perfect, in fact feels better than playing it on the ps1.
So I suggest you emulate it with a emulator.
I noticed my ps1 achually plays it a little slow.
On my pc it goes a bit faster, but it takes a lot of configuring to get it right just for your pc.
Here are some download links
http://www.epsxe.com/ - Emulator
http://www.ngemu.com/psx/epsxe.php?action=plugins - Suggested Plugins
It's always a good idea to experiment with different plugins.
Different plugins are better for different sorts of hardware.