Fueling rumors of a possible romance, Dax Shepard gave Kristen Bell a lift to have her car serviced in Los Angeles yesterday.

The Punk’d prankster was spotted helping the Heroes hottie take her Saturn Vue over to MasterCare Car Service for an undisclosed reason.

The pair then hopped in Dax’s pickup truck and jaunted over to Vivian’s Caf� to enjoy an afternoon of food and conversation, before heading back over to the car shop.

And Kristen kept it casual, wearing some ripped jeans and a black shirt, while Dax sported a button-up top with some trendy distressed denim.