IZOD IndyCar Series front-runner Andretti Autosport has signed up 2008/09 A1GP World Cup of Motorsport Champion Adam Carroll for a limited schedule of races over the second half of the 2010 campaign.

The team has yet to determine in which events the Irishman will compete, but it is understood that the deal has been in the works for some time - and is a likely precursor to a full season of competition across the Pond in 2011 with the winningest outfit in Indy Racing League history, with three IZOD IndyCar Series crowns, two Firestone Indy Lights titles and a brace of victories in the iconic Indianapolis 500 all to its credit since 2004.

"I'm very excited to be joining the driver line-up at Andretti Autosport," enthused 27-year-old Carroll, who earlier this year endeavoured to secure a seat with one of the new start-up F1 operations. "It is gratifying to know that the success I've enjoyed so far in my career has drawn the attention of a team owner like Michael Andretti. The IZOD IndyCar Series is clearly one of the most competitive formulas in the world right now, and I'm looking forward to being introduced into the field later this year."

Carroll's outstanding career CV - having triumphed at every level in which he has competed from Formula Renault Campus, Formula Ford and F3 to A1GP and GP2 - was palpably a significant factor for Andretti Autosport chairman Michael Andretti, who is full of expectation for what the former BAR-Honda test driver might be able to achieve.

"We're very excited that Adam is on-board," underlined the 1991 CART Champion. "He is a special talent and someone who we believe will have a bright future with us at Andretti Autosport. It was important for us to give him an opportunity this year and start building for the years to come. I'm looking forward to seeing what he can do later this year."

Andretti Autosport's other drivers in 2010 are Danica Patrick, Tony Kanaan and Marco Andretti, with Ryan Hunter-Reay and John Andretti like Carroll both on part-time deals.