A metal box which suburbanites sit inside of and make honking noises.
Yes, he could have taken the Subway, and been there in about a half hour; or ridden his bike, and been there in forty minutes. Instead, he opted to sit on the FDR in his honkbox.
A two-ton, four-wheeled, enclosed (as in a house) vehicle used by the majority of Americans for their daily transportation needs. While technically operated in the public right-of-way, Americans consider the interior of the wheelhouse to be their own, exclusive space, where they are not expected to socialize with their fellow citizens (similar to the non-wheeled house where people typically sleep at night).
It's no wonder the average American feels no sense of civic responsibility: Their lives consist of going from their house, to their wheelhouse, to work, and back.