LAND SPEED--Don Carr, driving the Carr-Kaplan AA fuel lakester, turned in the fastest speed in El Mirage dry lake history last Sunday with 290.979-m.p.h. run over the 1.3-mile course. He broke his record of 288.461 set last month. The SoCal Timing Assn. season ends Nov. 6.
STOCK CARS--With two races left in the $470,000 NASCAR Southwest Tour series, Roman Calczynski of Sepulveda leads Troy Beebe of Modesto by 2 points going into Saturday night's race at Mesa Marin Raceway in Bakersfield. The 200-lap race will be the longest in Southwest Tour history on a track of less than a mile. The season will end Nov. 5 at Phoenix International Raceway. . . . Stockers race Friday night at Ventura Raceway.
Junior Johnson, whose General Motors cars have won 6 Winston Cup championships since 1971, will switch from Chevrolet to a Ford Thunderbird next season. It will be a return to Ford for Johnson, who raced and owned them in the 1960s. Terry Labonte will remain the team driver.
MOTORCYCLES--Winning the world road racing championship apparently stimulates interest in the champion to try 4-wheel racing. Three-time champion Freddie Spencer will make his auto racing debut in the Barber Saab series during the Camel Grand Prix of Southern California Oct. 23 at the Del Mar Fairgrounds. Reigning world champion Eddie Lawson celebrated his return home after winning the 1988 championship by driving a three-quarter midget in the United States Auto Club series at Ascot Park.