A single vehicle accident occured this morning shortly after 4 am that injured area teens.  Excessive speed and alcohol contributed to the accident.  The driver, age 16 from Tonkawa, was ejected and has been transported to OU Medical Center in Oklahoma City in serious condition with head, leg and trunk injuries.  The passenger, Gabriel Sardina, age 19 from Ponca City, was transported to Stillwater Medical Center, and is listed in critical condition with leg and trunk injuries.