Hell's Highway.

Four college friends take a fateful road trip. The road, Hell's Highway--a direct route to terror. They pick up Lucinda: A hot young hitchiker, full of sexual deviance and lust for the bloody kill. After being terrorized and nearly killed, the group manages to turn the tables. They thought they killed her, but around the next ben--around every ben-- she appears like a mirage ready to murder again. Is she the devil? Can anyone stop her killing spree?