Busch finished second Friday night in the Craftsman Trucks Series race, the first of a planned cross-country trifecta to become the first driver to race in all three of NASCAR's national series at three different tracks on the same weekend.
Ron Hornaday Jr. held off Busch for the final two laps after a green-white-checkered finish for his 35th career victory, his first at the 1 1/2-mile, high-banked Texas track.
On the previous restart with 11 laps to go, Busch moved from fourth to second in less than one lap, getting past Johnny Benson and Jack Sprague to get behind Hornaday. But Busch never could push in front for the lead.
Because Busch didn't drive the truck during qualifying Thursday, and also missed the drivers' meeting, he had to start at the back of the 35-truck field. He was up to 16th after only 30 laps, and was in the top 10 within 53 laps.
"We fixed it and made the most of it," Busch said of his Toyota, which he wasn't happy with all night. "It wasn't for me. We made so many adjustments to it all night. We're lucky we made it home in second. ... That's all we could do."
Busch was going for his third Craftsman Trucks victory in seven starts this season. He is the Sprint Cup points leader and is second in Nationwide points, with four victories in each of those series.
Busch arrived at the track about an hour before the start of the truck race, after a nearly three-hour flight from Pocono Raceway in Pennsylvania, where he had earlier qualified 10th for the Sprint Cup race Sunday.
Busch was headed back to Pocono late Friday night, and his itinerary said that he was scheduled to arrive at Wilkes-Barre/Scranton International Airport "really late." There will be more Cup practice Saturday before Busch goes to Nashville for the Nationwide Series race.
Asked how he felt, Busch said he wasn't tired.
"Tonight was a hot night, that's for sure," he said. "I'm not tired. No, just hot."
The final restart was set up when Scott Speed, the ARCA rookie who traveled with Busch from Pocono, slammed into the wall with two laps to go in the scheduled 167-lap race.
That set up the fifth straight green-white finish at Texas, extending the race to 172 laps. But Busch, more than a half-second behind Hornaday when the caution flag came out, couldn't take advantage of the extra restart.
"I spun my tires a little too much and wasn't able to get alongside Ron," Busch said. "When he went, I went and I went too hard, and spun the tires. So I missed out on a good run."
Hornaday led a record 140 laps and finished 0.283 seconds ahead of Busch, taking over the season points lead.
"You have no idea what was going through my mind," Hornaday said about the final restart. "I'm going for a championship ... He had nothing to lose at this race but to try to win all three races in three different starts. But that shows what kind of driver Kyle is. He raced me clean."