It happened Wednesday along Little Road in Pasco County.
The sheriff's office says a road rage incident escalated when two women--Shelly Gemberling and her stepdaughter Alicia Scarduzio--pulled the victim by the hair and neck through her open driver's window and began beating her unconscious.
A passerby finally ran over and shoved one of the suspects aside to help the victim, who also suffered a broken nose.
Gemberling and Scarduzio are charged with aggravated battery.