FORT WORTH, Texas — Kyle Busch keeps extending streaks at Texas in search of a NASCAR first.

Busch won his fourth consecutive Nationwide Series race at the 1 1/2-mile, high-banked track yesterday. The dominating victory in the O'Reilly Challenge came a day after he won his fifth truck race in his last five starts in the series.

He will try to complete an unprecedented trifecta today and become the first driver to win all three of NASCAR's national series on the same weekend.

"I hope it happens, that would be the greatest thing," Busch said. "The hardest one is the last one."

Busch qualified fifth for today's Dickies 500 at the Texas Motor Speedway, where he is 0-for-9 in Sprint Cup races and finished 18th in April.

When Busch climbed out of the car in Victory Lane yesterday, he said he was "sorry" he won and would make it three in a row. When asked later about what reaction he expected if he did pull it off, he said he was "messing with the fans" with his comment and wasn't sure.

"People would get tired of buying tickets to the Kyle Busch show, I guess," he said. "That's two, one more to go. ... If luck is on our side and we play it smart, we could come out of here 3 for 3. That would be pretty special."

Busch went on to lead 179 laps and win by 3.154 seconds over Casey Mears, who was filling in for Jeff Burton in the No. 29 Chevrolet.