James Davison is set to take over the Dale Coyne Racing #18 car for August's IZOD IndyCar Series race at Mid-Ohio Sports Car Course, meaning that the third-generation Australian racer will finally get to make his race d?but in the senior US open wheel series.

Davison - son of former racer and long-time Sandown Raceway event promoter Jon Davison, and grandson of four-time Australian GP winner Lex Davison - has previously competed in Champ Car Atlantic, the Star Mazda Championship and the Firestone Indy Lights Series but until now has been thwarted in his attempt to make it into IndyCar.

"It's an incredible feeling to finally realize my dream of becoming an IndyCar driver after four years of adversity on the sidelines," said Davison. "I've had to work overtime for this opportunity and can't thank Dale Coyne and all my supporters enough for their continued faith in me.

"There will no doubt be a lot to learn however this is the challenge of racing some of the best drivers and teams in the world in IndyCar," added the 26-year-old, whose cousins Will and Alex currently race in V8 Supercars. "I'll be pushing to achieve the best possible result in my rookie race."

Davison won two Indy Lights races at Mid-Ohio, the last time in the wet when he went on to finish in second place in the championship with Vision Racing in 2009. Since then he's made appearances in the GRAND-AM Rolex Sports Car Series with Starworks Motorsport, Michael Shank Racing and Michael Baughman Racing, and last year also competed in the Australian Carrera Cup Championship.

However the 26-year-old has remained determined to finally fulfil his dream of running in IndyCar, and will finally get his chance next month at Mid-Ohio. He tested at the 2.258 mile, 13-turn permanent race course outside Lexington with the team in June and will get a further chance to take part in an official pre-event test for all IndyCar teams just before the August 4 race.

Davison will be taking over the #18 from previous incumbents Ana Beatriz, Mike Conway and Pippa Mann as part of a 'revolving door' approach the team has to its second car alongside full-time driver Justin Wilson. Conway had spectacular success in the car at the Detroit double-header, winning the first event and finishing on the podium in the second, although he had less satisfaction at the Toronto double-header where the car struggled for grip.

Conway has been confirmed for the third and final double-header event in Houston and Mann will return to the team for the season finale at Fontana, but the team's plans for Sonoma and Baltimore are yet to be announced - meaning that if Mid-Ohio proves to be a success then Davison might be in with a shout against other mooted candidates including former Panther Racing driver JR Hildebrand and Indy Lights' Stefan Wilson, younger brother of Justin.

However at present Davison's stint at the team is for the one outing only at Mid-Ohio. Davison tweeted that he'd already been for his seat fitting at Dale Coyne Racing's Chicago, Illinois facility earlier this week