The Lancia Delta S4 is not a car that really needs explaining – it does exactly what it says on the tin. It consumes as much air as the enormous bulging vents suggest it requires. It gets as much air over crests as the huge winglets and canards look like they can counteract. It’s brutally beautiful, brilliantly unapologetic, in parts seemingly hilariously unnecessary and yet totally functional and focused. It is Group B.