Rolex 24 Hours of Daytona

Castroneves slides into sports cars to lead Penske team

Helio Castroneves is one of the most popular and accomplished drivers in IndyCar Series history. He is about to find out if an old driver can learn new tricks.

Castroneves is the anchor of Roger Penske's new sports car team , which will make its official debut this weekend at the Rolex 24 Hours of Daytona. Penske needed a strong lineup for his program with Acura, and shipping his three-time Indianapolis 500 winner to IMSA helped solve the problem.

Castroneves is a company man, so he accepted the move. The questions are how quickly the Brazilian can adjust to sports cars and if his fan base, which stretches beyond racing after his winning stint on "Dancing With The...