Seems pointless all together. Pedestrians should get out of the way when they see a GTR coming anyway. They have the y-pipe as an audible warning to GTF out of my way.
My main concern is extreme evasive maneuvers that people will take at speed to avoid pheasants etc, so as not to activate this retarded extraneous system.
I hit a cone in one of Nissans academy GTR's at 10mph (I outbraked myself) but this didn't happen.
Bad times for your friend.