The relatives strengths of the squabbing United States Auto Club and Championship Auto Racing Teams will be tested again early this month.

CART came out strong with seven of its drivers among the first 10 finishers in the Indy 500. Its next stop is Trenton, N.J., June 10. USAC has a race the same day at Milwaukee. Just how many cars it can muster for that event and for the June 24 Pocono, Pa., 500-miler is a guess.

Mary Hulman, widow of Speedway owner Tony Hulman, has indicated interest disposing of the 560-acre Speedway property. John Mecomb, owner of the New Orleans Saints and a former 500-winning-car owner, seems to have the inside track, if anyone does. A.J. Foyt has expressed interest, and so has Roger Penske. Selling to Penske would be similar to selling Grant's Tomb to the Daughters of the Confederacy. Indianapolis is USAC country, and Penske founded CART.

Consistency has put Wyman Buel of Hoadley, Va., atop the late-model sportsman-class standings at Old Dominion Speedway in Manassas. He rarely wins but rarely is out of the top five in the Saturday night races. Bill Earl of Bowie and Morris Johnson of Annandale, head the limited-sportsman division with Tony Lowe, Brentwood, heading the street-stock class.

England has its first "superspeedway." It's a one-mile oval at Mallory Park where a race for American "saloon cars" (sedans) has been scheduled this month. The sedans are of the Camara class with limited modifications. Each entry has a $10,000 claiming price on it to keep the alterations from becoming too expensive. Most ovals in Britain are quarter-mile dirt or cinder tracks. The Mallory circuit is part of its road course.

In February, Kenny Roberts was seriously injured testing a new racing motorcycle. Today, he's in first place in defense of his world road-racing championship.

A victory in the Spanish Grand Prix put the Yahama rider ahead in the 500cc (31. 5 cubic inches) class. The first American to win this title, Roberts now has three victories and a second place since returning to action on European courses.

Local riders will race Friday night over the dirt Dorsey, Md., track while the road racers have a meet at Summit Point W. Va., next weekend (June 9-10).

At Dorsey, now in its 29th season defending champion Will Dilks of Baltimore has gone into the lead in the modified-sedan division. Stacey Schaeffer of Laurel has won three straight street-stock races and heads that class while Scott Robbins of Elkridge, Md., is the top Figure Eight driver. Racing starts at 7:45 p.m. Saturday at the quarter-mile track near Baltimore-Washington International Airport.

This is what amateur road racing is all about: Former news reporter and now public-relations man Mike Delaney towed his Ford Pinto to Summit Point for a recent meet. In practice, he lost his brakes on a wet track.

Track manager Pat Goodman's wife drove home and brought back new brake pads off the family car for Delaney.

"Pay us when you come back with money," she said.

Down in the muck and mire of the pits, Delaney labored to install the pads. He was able to line up for the race but was at the rear since he hadn't registered a fast practice time.

The car went well, and Delaney fould he could handle the slick track. He passed current national champion Bob Jordan to win his class.

"But, I never got a call from the announcer," Delaney said. "He couldn't believe I had beaten Jordan. And I didn't even get the victory lap. They gave the checkered flag to Jordan, and he took the lap."