Rubens Barrichello won Felipe Massa's International Challenge of Go-Kart Champions on Sunday, beating the likes of Michael Schumacher and Jeff Gordon.
Brazilian Barrichello won the first race ahead of Renault test driver Lucas di Grassi after Schumacher spun off from second position.
Massa won the second heat, but fifth place was enough for Barrichello to secure the overall victory.
Di Grassi, who had secured pole position on Saturday, finished second overall, with Massa in third place.
Schumacher, winner of the event last year, had to be content with fourth position.
This year's line-up included several current and former F1 drivers like Antonio Pizzonia, Tarso Marques, Ricardo Zonta, Luciano Burti, and Luca Badoer.