The Mazzer roadster was a scratch-built custom roadster created by Wil de Groot of Exoticars USA in New Jersey as an after-hours labor of love. It was based on a Maserati Quattroporte donor car and loosely designed in the spirit of a Maserati 450S, though it was not a replica and did not pretend to be a Maserati, but a deliberate union of vintage and modern elements and style. The…