Nick Lachey on His Relationship with Vanessa

From hot cars to hot clothes and even hotter stars, “Extra” has your ticket the ultimate GM event where Mario Lopez, Petra Nemcova and Jay-Z all hit the runway at the GM show in Detroit.

Super sexy Carmen Electra also cruised the catwalk, as did Christian Slater, who revved up the crowd.

But it was Nick Lachey who really kicked things into overdrive, and only “Extra” got juicy couple's news from Nick as he dished about his very public make-out session with girlfriend Vanessa Minnillo on MTV.

“It's New Year's Eve, it's midnight, you want to kiss your girlfriend,” Nick said. “We never made it a secret that we were together.”

So are Nick and Vanessa in love?

“We don't get into that,” Nick said.

Meanwhile, Jay-Z's mood was far from blue at the event; GM just named a car color after him, appropriately titled Jay-Z Blue.

“It's good to be me right now, it feels good,” Jay-Z admitted.

While the stars soaked up GM style, the super sexy Mario Lopez took Carlos Diaz behind the scenes for an up-close and personal look at GM style.

“I get to wear Dolce and Gabbana, whic is one of my favorite designers,” Mario dished.

Also rocking the GM catwalk was “Dreamgirl” Jennifer Hudson, who told “Extra” she's living in high gear after receiving a Golden Globe and SAG Award nomination.

“I woke up crying yesterday morning thinking of all my blessings, and just saying thank you God,” she confessed. “Because everyday is a new surprise.”