DOVER, Del. (AP) Kyle Busch climbed out of his truck, bowed to the crowd, and sprayed beverages at his crew.
Busch has the familiar victory celebration down pat - a perfect end to what has been a perfect season.
Busch made it 4 for 4 in the Truck Series, dominating again to win at Dover International Speedway. He was again the class of the field on Friday and now has a checkered flag at Dover to go along with ones from Daytona, Kansas and Charlotte.
''I don't know that there's anything I can say that I'm doing that's allowing us to win those races,'' Busch said. ''Just unload and expect to win races.''
Cruising in the No. 51 Toyota, Busch led 150 of 200 laps on the mile track. Busch won from the pole for the third time, his lone blemish a seventh-place start at the season-opener at Daytona.
''I've enjoyed being able to run up front and lead laps,'' Busch said.
Busch won his fifth straight Truck Series race overall, taking the 2013 season finale at Homestead. He has 39 series victories.
''We're just trying to work on our stuff and make it faster,'' he said. ''All that work is paying off this year.''
Busch does not a run a full season, but has won every race he entered. He can make it a tripleheader sweep with a win in Saturday's Nationwide race and Sunday's Cup race. Winning a Truck race was a nice start.
''They're fun to drive, but they're certainly a challenge to drive, especially here,'' he said.
Matt Crafton, the defending series champion, won the only other Truck race at Martinsville. He was running second when he smacked the Dover wall with about 43 laps left, ending his race. It was the first time he hadn't finished in 47 series starts.
Ryan Blaney was second, and Johnny Sauter, Brandon Jones and Joey Coulter round out the top five. Only seven trucks finished on the lead lap.
''I don't think anyone was going to catch the 51,'' Blaney said. ''He was something else.''
Busch will skip the next two series races and return for the June 26 race at Kentucky. Always confident his abilities, Busch said finishing undefeated was ''feasible.''
''We've beat him,'' Sauter said. ''We've beat him at different racetracks in the past. Kyle's a great racecar driver, we all know that. We also know he's not unbeatable. I'm pretty confident we can catch him.''