Andretti Green Racing has finally confirmed that it will take over the running of the USA's A1 Grand Prix entry, with the fourth 'World Cup of Motorsport' kicking off this weekend at Zandvoort.

Much had been made of the change of ownership of the team, with rumours of legal action being considered by Rick Weidinger, the 'seatholder' of A1 Team USA for the first three years of the A1GP.

However, with the rumour mill going as far as suggesting that AGR IndyCar drivers Marco Andretti and Danica Patrick could share the seat previously occupied by the likes of ex-AGR man Bryan Herta, Indy 500 winner Buddy Rice and rising star Jonathan Summerton in recent years, AGR has finally confirmed the expected.

"We are very proud to be representing the United States on the level and competitive playing field that is provided by A1GP," said co-owner Michael Andretti, "Andretti Green has been fortunate to enjoy a reasonable amount of success in just six seasons of operation and we're looking forward to joining the world stage of A1GP."

AGR can already boast three IndyCar Series championship titles, two Indianapolis 500 wins, one Firestone Indy Lights championship, an overall American Le Mans Series victory with an LMP2 entry and a class victory at the 12 Hours of Sebring, and will now look to guide A1 Team USA to hitherto unscaled heights to add to that record.

Andretti will be on hand at Zandvoort to announce the team's driver line-up, but the rumour mill appears to have done an about-turn in the past 24 hours, with Patrick now no longer being linked to the seat.

Despite Weidinger's intentions still far from clear, A1GP chairman Tony Teixeira welcomed Andretti and AGR to the World Cup.

"We are proud to have such a successful and well-respected team involved with our series," he noted, "Over the years some of the most famous names in motorsport have been associated with the A1GP, and to have one that is synonymous with racing at its highest level in the United States can only help to raise the profile of the series both there and worldwide."

A1 Team USA will be present among a limited entry for this weekend's season-opener in the Netherlands.