 The fixed-profile convertible variant of the 500 debuted at the Geneva Motor Show in March 2009 designated the 500C ("C" for "Cabrio"), historically recalling the fixed-profile convertible of the original 1957 Fiat 500 — as well as similar fixed-profile convertibles such as the Vespa 400 (1957), Citroën DS 3 (2013), Nissan Figaro (1991), Citroën 2CV (1948–1990) and the Nash Rambler Convertible "Landau" Coupe (1950).The 500C features fully stamped body-side panels retaining the hatchback 500's profile (door frames, roof pillars and side windows) to increase structural rigidity, reduce scuttle shake, and retain side and curtain airbags — in trade for a less open experience than a fully pillarless convertible.Weighing 40 kg (88 lbs) more than its hatchback counterpart, the 500C features a slightly longer windshield than the hatchback, with a concealed and reinforced upper structural cross-member; a stronger front cross-member behind the instrument panel; a rear strut on which the retracted roof folds; reinforced B-pillars; and the rear anti-roll bar setup from the Abarth, high-performance model.