A trailer filled to the brim with fireworks caught fire and exploded into smithereens on a Tennessee highway Saturday — while the truck it was hitched to was somehow spared from the carnage, wild video shows.

Traffic came to a standstill on I-75 North in Hamilton County, Tennessee, on Saturday evening when a white pickup truck started smoking on the side of the road.

A box trailer attached to the truck somehow caught fire during its journey.

The Chattanooga Fire Department and the Tri-Community Volunteer Fire Department responded to the blaze while other agencies helped redirect traffic away from the impending pyrotechnics display, WKRN reported.

Cameron Parker, a Hamilton County local, was investigating the apparent explosions when he found the impromptu fireworks show.

“What is happening?” Parker asked as he reached a guardrail on a bridge over the road.

As Parker settled beside other curious onlookers, he saw smoke rising in the distance — and dozens of fireworks going off all at once. Sparks bounced across the highway as witnesses watched on in apparent bewilderment.

“Is this the grand finale?” Parker joked as the fireworks slowly fizzled out.

“This is nuts. I literally pulled off to the side of the road because I heard it before I saw it, and then I came across this bridge back here. This is absolutely crazy,” Parker said.

Parker’s video of the fireworks display went viral and has been viewed more than 3 million times as of Sunday evening.

Photos shared by the Tri-Community Volunteer Fire Department showed the trailer’s smoldering remains as firefighters hosed it down. The white truck that it was hitched to appeared largely unscathed, save for a few scorch marks.

No injuries were reported and traffic started slowly inching forward closer to 11 p.m. — more than three hours after the highway was shut down, WSMV reported.