i had this idea ages ago that the tank should be able to pick up and carry cars and use them as 1 hit incap weapons, and then when he's done with them he should be able to throw them at the survivors.
when he's carrying them he needs a huge speed reduction , and when they are thrown it should have the same trajectory as his regular rocks.
i tried making it myself but got frustrated and gave up when i couldn't get the cars to attach to his hand in a realistic looking way.