The Doppel-chatterer and its "hearing aid" bound away from the impending conflict, back into the junkyard. Fuchsia will have told them where to look for the robo-squirrels, and may have shown them the video she took of the "adorable" critters in a spare moment during all this hubbub.
Squirrelganger crawls under the truck where the other squirrels were seen, and then pops up through a rusty hole in the floorboard...and sees the two of them instantly!
The squirrels are peering out of the smashed windshield at the scene near the junkyard entrance. Their metallic chatters are clearly concerned, though unless Doppelganger's powers are crazy enough to change their brain functions entirely, they won't be able to understand what they hear. It's probably tech-squirrel-speak anyway, not normal squirrel-speak.
The robo-squirrels have decided to high-tail it (pun!) out of there, so they adjust their packs, slip out of the truck, and hippy-hop through the junkyard. So cunning is Doppelganger's transformation that they're able to dodge out of the robo-squirrel's line of sight with ease.
The squirrels will head to the northwest corner of the junkyard, easily slip over the fence, and then enter the forest, hopping from tree to tree. Doppelganger and Small Fry can follow them easily, and won't be detected.