"Yeah, and what if it starts rampaging?" Pupa said.
"NO! That tank was a prototype! 3 years of development, and you just demolish it?!" Glacis said. "You know what, you stay out in the storm! I don't want a pony who doesn't have just the tiniest bit of respect towards these vehicles to be my gunner! Sorry, Twilight, but you're just not fit for this!" She said. "Now, restore the prototype to its former state, or I'll make sure you'll be locked up for treason and hindering the war effort!"
OoC: sorry, but one doesn't simply whip up a tank design like that. Hardly possible.