[Siri]

27.75"x27.75" square (incidentally, also approximately a 27.75" cube, when collapsed). Pretty logical for us: maximized stable wheel base square for swerve. Other than ensuring it fit on the pyramid corner between levels (for the way we climb), there wasn't any more strategic incentive on the size/shape. We try to churn our chassis design out within days, so peculiar shapes are an investment we didn't have the need for this year. Never had a problem with doors.

Good question. I liked the rule's setup this year. Even the small number was very appropriately challenging from a design perspective.