The San Diego Chargers and Oakland Raiders have released overhauled renderings of their proposed $1.7 billion stadium in Carson near Los Angeles.

The Chargers and Raiders presented their concept in New York this week to NFL Commissioner Roger Goodell and the Committee on Los Angeles Opportunities, composed of six team owners.

The revised plans show a futuristic open-air venue that has a peristyle reminiscent of the one at the L.A. Memorial Coliseum.

"We wanted the building to be iconic and sleek, like a luxury sports car," said David Manica, president of Manica Architecture, who is designing the stadium. "Very aerodynamic, in motion, flowing lines from every angle." 

A signature element of the design is a 115- to 120-foot tower that rises through and extends above the main concourse.

There would be a cauldron that would change depending on the team.

For Raiders games, a flame would burn in the cauldron in honor of legendary team owner Al Davis.

When the Chargers play, simulated lightning bolts would swirl behind glass encasing the tower and, if the team were to score a touchdown, a bolt would shoot out of the top.

The tower would be transformed into a giant Lombardi Trophy if the venue were to host a Super Bowl.