Both players estimate the same quantity out loud, and the referee types both numbers in before either of them hears how close anybody was. The closer estimate takes the point, on the same how-many-times-off scoring Order of Magnitude uses. The table still has an accuracy to hit across the five quantities though, and that number does not care who won: a round you were both wildly out on is lost by both of you.

Players: Three or more people in the car.

Driver: Reasons out loud to a number, then hears how close it was.

The bar: The log-error threshold, tightened for having more than one go at it.