"They've got a tank!"

Unique vehicles are a mainstay of the "Fast and the Furious" franchise, but the upcoming "Fast & Furious 6" is the first time audiences have ever seen a full-fledged, military-grade tank racing after the souped-up muscle cars or tricked-out imports driven by our heroes.

A brand-new clip just debuted on MTV, and in it, Tej Parker (Chris "Ludacris" Bridges) relays updates to his teammates during a high-stakes heist, leading to what promises to be one of the most unexpected chase sequences in the series' history.

"Let's play this fast and clean," Tej says via walkie talkie. (Playing it fast and furious might be inadvisable in a situation already fraught with tension.) "That thing's headed your way," he informs the rest of the team.

After one of Hobbs' (Dwayne Johnson) men launches a steel cable into the rock walls on either side of the freeway, his enemy's truck flips in the air. The transport Tej and company aimed to hijack grinds awkwardly to a halt. But before they can proclaim victory, a tank -- hiding in the back of the transport -- blasts through the crumpled cab that was carrying it, and takes off after the rest of Tej's teammates. Suffice it to say that the lookout man is concerned with the success of their plan. "Uh, guys, we've gotta come up with another plan," he says meekly. "They've got a tank!"

Check out MTV News' sit-down interview with castmembers as they uncover secrets about the upcoming sequel and answer fan questions.

Check out everything we've got on "Fast & Furious 6."