 GEOG: When the three boys are questioned by Scully and Mulder about  which direction the trucks went, they point to their right (viewers  left). Because they are standing in front of the Dallas skyline with  Reunion Tower on the left, then they are south of Dallas, and are  pointing west. In the next scene Scully and Mulder are driving  through Texas. The shadow is on the drivers side (north side) of  the car which means they are driving east..