The crash happened just before 2 a.m. at the intersection of Arborway at South Street in Boston, Massachusetts State Police said.
A crash recreation showed the 2003 Accord made an illegal turn onto South Street and collided with the motorcycle, ejecting the 24-year-old driver and a 22-year-old passenger. The latter was in critical condition Sunday afternoon at Beth Israel Hospital, and the driver was taken to Brigham and Women's Hospital with non-life-threatening injuries.
Neither was wearing a helmet, police said.
The Accord never stopped and speeded away from the scene. State police are searching for that car and driver.
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