The ornamental design for an autonomous flip-up license plate mount for motorcycles, as shown and described.
FIG. 1 is a perspective view of an autonomous flip-up license plate mount for motorcycles;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right-side elevation view thereof;
FIG. 5 is a left-side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view thereof in a collapsed configuration.
The broken line showing an automatic pivoting mechanism and is included for the purpose of illustrating environmental structure and forms no part of the claimed design.