McCullagh signed with Xtreme Motorsport on a short-term deal which will see him race in Darwin for five meetings over the next three weekends, starting Friday night.

The talented driver said Xtreme Motorsport made him “an offer I can’t refuse’ and that he was quick to put pen to paper.

"It's a childhood dream," he said.

"The end goal, that dad and I set, is that we can race and someone else pays the bills.

"It's a very expensive sport and you need to be quite wealthy to be able to do it full-time.

"So if I can race as many times as I can, and obviously I'd love to do it professionally, then this puts us one step closer to that dream."

McCullagh said he did not see the exciting offer coming, but believed it came as a result of winning the Grand Annual Sprintcar Classic in January.

"It was pretty much just sprung on me,” he said. “I was called on Sunday and we did the deal that day and booked the flights that night.

"I think the classic played a huge part in that because the car owner (Jamie O'Neil) was actually there in Warrnambool to watch me win.”

The Warrnambool speedway star said the new deal offered new opportunities for him, both on and off the track.

"I’ve never been to that part of the country before so I am really looking forward to seeing it," he said.

"I am also really looking forward to the weather which is obviously a lot better than here.

"But I've been itching to race for a long time, I didn't want the season to end so I can't wait to get back into it."

The 27-year-old admitted the whole situation was not as glamorous as it seemed.

By the end of his stint in Darwin, he will have taken at least six flights and travelled more than 21,000 kilometres.

He said it was a small price to pay to try.

"I will be racing for the next three weekends and will be flying back home between each one,” he said.

"It's not ideal and in the scheme of things I'd love to stay up there for the three weeks, but it doesn't pay bills so I will be back at work on Monday.”

McCullagh begins his campaign in the Northern Territory on Friday before competing in the Chariots of Thunder.

"I am not setting any real goals. It will just be good to be up there with the best drivers,” he said.

"I think the best drivers in the world can adapt to all conditions from the weather to motors to tracks. So if I can gain that experience I think it is a win-win."