APK MOD INFO
Name of Game: Zombie Highway
VERSION:1.10.7

Name of the cheat, mod, or hack (credits: wendgames):
-All Shop Itemps Unlocked

Zombie Highway MOD APK 1.10.7 (All Shop Itemps Unlocked)

Download the CACHE file/OBB file. They should be .zip or .rar files.
Extract the file to your sdcard.
Move the extracted folder to the location: /sdcard/Android/obb