The ornamental design for a vehicletrailer, as shown and described.
FIG. 1 is a top, rear and right side perspective view of a vehicle trailer, showing my new design.
FIG. 2 is a right-hand side elevational view thereof.
FIG. 3 is a top plan view thereof.
FIG. 4 is a front elevational view thereof.
FIG. 5 is a rear elevational view thereof; and,
FIG. 6 is a bottom plan view thereof.
The left-hand side of the vehicle trailer is a mirror image of the right-hand side depicted in FIG. 2.
The broken line showing of the vehicle trailer is for the purpose of illustrating portions of a remainder of the vehicle trailer only, and forms no part of the claimed design.