Adam Scott joins 'Side'

Joel Bissonnette also tapped; Matt Bissonnette to direct

Adam Scott is hopping in the car with Joel Bissonnette for "Passenger Side," a comedy that reunites him with director Matt Bissonnette and producer Corey Marr. Scott also is exec producing.

Written by Matt Bissonnette, the story follows two brothers who spend the day driving around Los Angeles looking for the meaning of their lives and cheap street drugs.

Scott plays a man whose birthday celebration is taken on a detour when his estranged, drug-addicted brother (Joel Bissonnette) comes calling.

The movie is privately financed and begins shooting next week in Los Angeles.

Scott worked with Matt Bissonnette and Marr on the 2006 indie drama "Who Loves the Sun," which also starred Molly Parker and Lukas Haas.

Scott (HBO's "Tell Me You Love Me") next appears with Will Ferrell and John C. Reilly in "Step Brothers." He's repped by CAA and Untitled.