The ornamental design for a front part of a vehicle or toy vehicle, as shown and described.
FIG. 1 is a front perspective view of the front part of a vehicle or toy vehicle showing my design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a first side view thereof;
FIG. 5 is a second side view thereof, the first and second side views being opposite to one another;
FIG. 6 is a top view thereof; and,
FIG. 7 is an enlarged view of a portion of the front perspective view thereof shown in FIG. 1.
The broken lines showing portions of the front part of a vehicle or toy vehicle are included for the purpose of illustrating environment and form no part of the claimed design.