A lovemobile is a popular name for a float

Float (parade)

A float is a decorated platform, either built on a vehicle or towed behind one, which is a component of many festive parades, such as those of Mardi Gras in New Orleans, the Carnival of Viareggio, the Maltese Carnival, the Macy's Thanksgiving Day Parade, the Key West Fantasy Fest parade, the...

. These lovemobiles are trucks with flatbed carrying sound equipment, a DJ or other live act, dancers and props, which is used as a central element at technoparade

Technoparade

A Technoparade is a parade of vehicles equipped with strong loudspeakers and amplifiers playing techno music. It resembles a carnival parade in some respects, but the vehicles are usually less elaborately decorated. Also, a technoparade doesn't share the carnival parade tradition of bombarding...

s. The setup and decoration of a lovemobile takes place in the days or weeks preceding the event. The lovemobile is driven at walking pace through a crowd of raver

Raver

Raver or ravers may refer to:* Raver, Maharashtra, a city in India* Raver, a party-goer: in the 1960s and 1970s, a "party animal"; since the 1980s, more specifically an aficionado of raves...

s as they dance to music powered by the truck's electrical system.