Ok here's the deal,
I don't know exactly if someone made this. But I never saw someone doing it.
Note: Sorry for bad video edition. I'm trying to upgrade it.
Also here are the steps:
-Start a new game
-wait to the end of the cutscene (final bomb in the Callaham bridge).
-Type "BANGBANGBANG" every time before the cutscene finish
NOTE: You can type the cheat starting the notice interview
-try to blow up the kumura car.
The video proof