Matsumoto Taiyou manga
The story of an orphanage, the children who live in it, and the beat-up old Nissan Sunny 1200 which provides a trio of boys with a means of escape from their bleak everyday lives.
From Viz: Orphaned on the mean streets of Treasure Town, lost boys Black and White must mug, steal and fight to survive. Around them moves a world of corruption and loneliness, small-time crooks and neurotic police officers, and a band of sadistic yakuza who have plans for their once-fair city. Can they rise above their environment? Won the Best U.S. Edition of International Material - Japan for the Eisner Award in 2008.