The teen driver in a Memorial Day car accident called the "worst solo crash in recent memory" didn't have a valid driver's license, and he was cited last month for violating his provisional one, the Los Angeles Times reports. Abdulrahman Alyahyan, 17, received a citation for illegally altering his 2008 Infiniti's exhaust system as well as using tinted windows, limiting his view. Alyahyan's application for a license was pending. He and four others were said to be en route to the beach when the crash occurred. Classes began again yesterday at the high school attended by four of the victims; students set up a memorial with flowers and other items on campus.