Subscribe | UPI Odd Newsletter Subscribe PERTH, Australia, Sept. 21 (UPI) -- The "Hamdog" a combination between a hot dog and a hamburger created by an Australian man will soon come to the United States. A post on the Hamdog Facebook page announced the food combination would come to South Australia and the U.S. and was seeking retailers in those regions. Advertisement "America's a bloody big place, they consume around 50 billion burgers a year," inventor Mark Murray told CNBC. "If we pick up even 1 percent of that market, then that's still around $2.5 billion a year." Murray said he came up with the idea for the meat-filled combination, which includes a special bun to accommodate both the burger and the hot dog, while incredibly hungry during a trip to the U.S. in 2004. "I had the idea on holiday when I was leaving a bar in Nashville. I grabbed a burger and a hot dog as I was really hungry," he said. "I was sitting in the car eating them both at the same time and my wife was looking at me like I was an idiot." He later took the invention to Australia's "Shark Tank" television investment show, where it was rejected by the judges. Advertisement It has since been sold at sporting events in Australia for about $6 each. Read More Chain offering free burgers for life to customers who change their last name to 'Burger' Finland offers world's first Burger King spa Competitor offers year of free burgers to Five Guys 'Hamburglar'