The ornamental design for a mobile retailtruck, as shown and described.
FIG. 1 is a front and left perspective view of a mobile retail truck, showing my new invention.
FIG. 2 is a rear and left side perspective view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a front and right side perspective thereof;
FIG. 6 is a rear and right side perspective thereof;
FIG. 7 is a right side elevation view thereof;
FIG. 8 is an enlarged cross-sectional view thereof taken about line 8-8 in FIG. 3;
FIG. 9 is an enlarged partial rear facing interior perspective view thereof; and,
FIG. 10 is another enlarged partial rear facing interior perspective view thereof.
The even-spaced broken lines in the drawing views represent environmental structure and form no part of the claimed design. The dash-dot broken lines in the drawing views define the bounds of the claimed design and form no part thereof.