Mystery machine chomps away at aquatic weeds at Golden Gate Park lake

The Aquamog may sound like the moniker of a comic book swamp monster, but it’s actually a vehicle that arrived at San Francisco’s Golden Gate Park in November to chomp away at invasive weeds.

The aquatic vehicle, a cross between a small paddleboat and a backhoe, dines on submerged and floating invasive plants like water primrose and parrot feather, according to the San Francisco Recreation and Park Department.