Splinter (2008)

A couple on a romantic weekend are carjacked and taken hostage by an escaped criminal and his girlfriend. As they drive deeper into the woods, the group finds itself targeted by a parasitic creature that transforms its victims into deadly hosts. When they finally seek shelter in an abandoned gas station, the virus begins to take them over one at a time, forcing the uninfected to work together to survive. Horror, starring Shea Whigham, Paulo Constanzo, Jill Wagner and Rachel Kerbs.