Geneva motor show: Alfa 4C concept

After much speculation, Alfa Romeo has finally shown its diminutive new 4C concept in the metal in Geneva - and it could emerge as one of the stars of the show.

Recent offerings like the Mito and Giulietta have received mixed praise, but it looks like the Italian marque is back on form with the stunning roadster, which previews a range-topping coupe that will go on sale in 2012.