The ornamental design for an automotive airpurifier, as shown and described.
FIG. 1 is a perspective view showing an automotive air purifier of my design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line showing of parts of the drawings is included for the purposes of illustrating use and environment and forms no part of the claimed design.