CONCORD, N.C. — Not everyone is pleased that Japanese automaker Toyota is preparing to join the ranks of America's most celebrated Good Ol' Boys.

NASCAR and Toyota officials jointly announced Monday that the car company will enter its Camry model in both the Nextel Cup and Busch Series beginning in 2007.

Team owner Jack Roush, who runs cars in each of the three top NASCAR series and whose drivers have won two of the last three Cup titles, offered a warning about Toyota's move up.

"If NASCAR manages to get in front of Toyota and tell them what they want to do and enforce it, they'll be the first sanctioning body that ever did that," said Roush, whose team runs Fords. "I'll watch with some interest, I'd like to say from a safe distance, but my distance is not far enough to be safe."

Toyota, which has competed in NASCAR's Craftsman Truck Series the past two seasons, was given NASCAR chairman Brian France's blessing.

France told more than 200 reporters taking part in the first day of the annual preseason media tour, "Toyota has proven in the truck series it can be a great partner. NASCAR offered them the best opportunity to build their presence in racing in North America and we're glad they are here."

Toyota will become the first foreign competitor in NASCAR's top series since Jaguar ran in several races in the 1950s. The Camry is an eligible model in NASCAR because it is built in Georgetown, Ky., one of eight Toyota plants in the U.S.

Toyota, becoming increasingly successful in the U.S. even as General Motors and Ford struggle, has previously been involved in American sports car racing and open-wheel racing. The company has been known in the past for inflating the cost of racing with its free spending, sometimes dominating the series and having a major effect on the rules before leaving for greener pastures.

Toyota also competes in Formula One and reportedly has a budget of $400 million a year.

"I'm concerned," said team owner Ray Evernham, whose team will run Dodges in all three of NASCAR's top series in 2006. "But NASCAR has to make sure that they keep a handle on it because, if (Toyota) has got a billion dollars to spend, they're going to wipe us out."