If the Yankees played the Mets in the World Series, it would be the two teams with the shortest distance between ballparks.
As it is now, and for every other case in memory, there is a travel day where games are not played as the series shifts from city to city.
In this example, since the Series is being held in the home city for both teams, would there be a travel day between switches in home stadiums, or would the series play out in 7 days?