Several serious crashes across Oahu over the weekend left multiple people critically hurt, including one hit-and-run victim.

• A 22-year-old man was critically injured on the H-2 freeway after a tire came off his car, sending it into a median and airborne.
• Police don't believe speed was a factor in that crash.
• A hit-and-run near Lava Heights Road left a woman in critical condition after she was found lying in the roadway; the driver fled without helping her.
• A separate crash on the Moanalua Freeway, involving a 74-year-old man hitting a parked vehicle, snarled traffic for the afternoon.

Outlook: Police are still searching for the hit-and-run driver, and the injured remain hospitalized in critical condition.