That would probably explain why the wall collisions were "softer" in the Sega Saturn version of the first WipEout; because the Sega Saturn used quadrilaterals instead of triangles, the collision mesh was likely "boxier" than in the PS1 version.
That wouldn't be a bad idea, might help to bring more attention to the AG Racing scene from Sony. Maybe some references to R8 and Caged Element wouldn't be a bad idea either.