PC versionXbox 360 Fans have made a PC version. Some are still early, so read the project page first.
Fans took Project Gotham Racing 4 apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here are the 2 projects we know about:
A Recompilation of Project Gotham Racing 4
MissingTheRecompilation: Project Gotham Racing 4