Motoring | Goodwood debut for superlight Alfa Romeo 4C Motoring SMC (Sheet Moulding Compound) reduces the weight from 7.8g/cm³ (steel) or 2.7 g/cm³ (aluminium) to just 1.5 g/cm³. Injected polyurethane for the bumpers and quarter panels is 20 per cent lighter than steel and still allows Alfa stylists to produce ... |