They know there will be traffic jams and 6 hours is enough to give people who dont stop to think past their nose, reason to say “see they had the chance to leave” when the reality of logistics means its actually a ripe opportunity for shooting fish in a barrel at 6 hours and one minute.
https://youtu.be/S5HHOjOmWag?si=Z7Q2ZpFl64yWKMc5
Pimento’s mementos