The ornamental design for a motorscooter, as shown and described.
FIG. 1 is a front and right side perspective view of a motor scooter showing our new design;
FIG. 2 is a rear and right side perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a right side elevation view thereof, where the left side elevation view is a mirror image thereof;
FIG. 5 is a rear elevation view thereof; and,
FIG. 6 is a top plan view thereof.
The bottom view is omitted because it is not seen during ordinary use. The broken lines of even length in the drawings illustrate portions of the motor scooter that form no part of the claimed design.