Hat Rack for Truck

FIG. 1 is a perspective view of a hat rack for truck showing my new design; FIG. 2 is another perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top view thereof; FIG. 8 is a bottom view thereof; FIG. 9 is an enlarged view of portion 9 shown in FIG. 1 ; and, FIG. 10 is an enlarged view of portion 10 shown in FIG. 2 . The broken lines shown in the figures depict portions of the hat rack for truck that form no part of the claimed design.