Underneath its sheet metal, the S90 employs Volvo's SPA (Scalable Product Architecture) platform, which made its debut with the XC90. This means a transverse front-drive layout, with unequal-length control arms in the front suspension and a multilink layout in the rear.  The car just glides over everything and that's when you keep your phone down and gaze out of the window and admire the colourful sky, at the same congratulating yourself on your buying decision.