Maryland park police put the kibosh on this custom van outfitted with enormous "wall of sound" speaker system

This crazy custom van was parked yesterday evening at Sligo Dennis Park in Silver Spring, Maryland. According to police, they intervened before the owner "had the chance to become a nuisance to park patrons and nearby residents." I think that's unfortunate as I'd love to know what was on the playlist.

Perhaps some Dead given the speaker array resembles Owsley's Wall of Sound?