The 26-year-old, who began his career at West Ham and joined Scunthorpe from Swansea in 2007, had been expected to sign for Hamilton after agreeing terms.
In any event, the Fusion's weird Aston Martin-ness was a matter of board-level sign-off, the judgment of designer Chris Hamilton, design chief J Mays and CEO Alan Mulally.
Despite the recruitment of Wolff, the most high-profile new arrival at the German team ahead of the new campaign is 2008 world champion Lewis Hamilton -- who ended a career-long association with McLaren to sign a three-year contract with Mercedes in September.