HOMESTEAD, Fla. — Nearly every NASCAR driver celebrates winning with a crowd-exciting burnout on the track. But Sunday after winning his first Cup Series championship at Homestead-Miami Speedway, Martin Truex Jr. got something extra as he spun his tires.

Along with the traditional white smoke, greenish-yellow smoke appeared to come out of the car — it’s unclear what caused it or where it came from — as Truex was creating his own smokey trail. There’s usually a ton of smoke, but not this much.

During his press conference after the race, Truex was far from his reserved and quiet self. Understandably, the No. 78 Toyota driver was jovial and excited, but he got on a quick tangent about the smoke when asked if he had spoken with his team owner, Barney Visser, who was unable to attend the race after having bypass surgery two weeks ago following a heart attack.

Truex had been cracking jokes all night — it’s possible he had a few drinks in the hours between Victory Lane and his press conference — and let everyone know how he felt about that added smoke.