you are in the United States of America then you encountered three police cars controlling themselves, you started to see a decepticon logo on them, you might thing is a self driving car but then you saw them all transformed

Crankcase: transforms into a robot RAAAAGH!!

Crowbar: transforms into a robot but with tentacles RAAAAUGH!! Takes out blue laser blaster from its hips

Hatchet: transforms into a robot beast then growls