Because you’ve caused a ruckus.
It’s an especially nice touch that the Shred-it truck is outside. Coincidence?
UPDATE: Said Benz has been towed and NYPD has re-opened Park Ave. Apparently it “appeared to be weighed down in an unusual way,” which leads to believe that the Shred-it truck was completely packed and some partner had pull around front to help get some sensitive docs out of 345 Park.