Thanks folks (interesting read). Was aware of front collision, but thought this was non-standard unless you order it.
Anyway, I think the interesting/important thing is that my car beeped like crazy when the person raced up my rear-end... it happened... so am happy for that feature whatever it is !
Bluestone G30 ///
M Sport Auto (Current)
Alpine White F10 M Sport | 8 speed Sport Auto - Gone to Stud