The ornamental design for a vehicletaillight, as shown and described.
FIG. 1 is a left side elevational view of a left vehicle taillight (the right vehicle taillight being a mirror image and is not shown);
FIG. 2 is right side elevational view of the vehicle taillight;
FIG. 3 is a front elevational view of the vehicle taillight;
FIG. 4 is a rear elevational view of the vehicle taillight;
FIG. 5 is a top plan view of the vehicle taillight;
FIG. 6 is a bottom plan view of the vehicle taillight; and,
FIG. 7 is a perspective view of the vehicle taillight.
The absence or presence of surfaces on the area enclosed by broken lines is not relied upon for patentability or infringement. The surfaces enclosed by broken lines are illustrated in lighter tones to distinguish them from the claimed surfaces.