The cyclist, authorities said, was often going between 100-110 mph.
Police said they saw the man driving erratically near Harcourt Avenue and 67th Street.
A suspect is at large Friday following a police chase that ended in Norwalk.
Two men were arrested Friday after leading Los Angeles police on a high-speed chase.
Police say a pregnant woman and her toddler are safe after they were carjacked and kidnapped Saturday evening in Altadena.