[yolesaber]

When I was visiting St. Petersburg, I saw that along Nevsky Prospekt (essentially the Fifth Ave of St. Petersburg) sanitation workers were using these large mounted vacuums to clean the streets. They weren't like tracks but rather like carts with a large, vertical component (I assume the vacuum parts) out of which came a hose. They did a pretty good job cleaning up the trash and detritus I saw along the Prospekt.

Your idea definitely has some credence.