The ornamental design for an armrest for autonomousvehicle, as shown and described.
1.1 is a top, rear and left side perspective view of an armrest for autonomous vehicle embodying our new design;
1.2 is a top, rear and right side perspective view thereof;
1.3 is a front elevation view thereof;
1.4 is a rear elevation view thereof;
1.5 is a left side elevation view thereof;
1.6 is a right side elevation view thereof;
1.7 is a top plan view thereof;
1.8 is a bottom plan view thereof; and
1.9 is a top, front, and left side perspective view thereof as installed in an exemplary interior of an autonomous vehicle.
The even dashed-dashed broken line showing of portions of an autonomous vehicle are provided for the purpose of illustrating environmental structure and forms no part of the claimed design.
All other broken lines in the reproductions, including the dash-dot-dash phantom lines and rectangular box in 1.9, are symbolic cutaway representations to indicate that environmental structures extend beyond the article.
These broken line showing for symbolic cutaway representations do not form part of the claimed design.