One Lane or Two

Everyone in Zerby Town decides to make an extra-long driveway. But with all the Zerbies' driveways extra-long, Main Street gets squished down to only one narrow lane. Zack and Axle try to figure out the problem. Zack thinks all the Zerbies should take turns driving in one direction - then the other. This works until they realize someone always needs to be there to direct traffic. Zack volunteers, but he realizes he can't spend all day directing traffic. They know shortening the driveways would make Main Street wider, but no one wants to shorten their new driveway. Axle realizes if they all move their garages back a bit, they can widen Main Street and still have long driveways.