Like violins, cars announce their need for a tune-up by squeaking shrilly and leaking oil every time you play Mahler. Keep your ride purring pleasantly with today's Groupon to Belleville Hand Car Wash. Choose between the following options:

• For $5, you get a hand car wash (up to a $9.50 value) and a silicone tire treatment (a $2 value; up to an $11.50 total value).
For $55, you get a detail service (a $110 value).

Belleville Hand Car Wash's technicians thoroughly scrub automobiles' sullied interiors and exteriors in a track-free facility. During the full-service hand car wash, car cleansers lather exteriors with a triple-wash solution before gently polishing surfaces, wheels, dorsal fins. An underbody spray rubs vehicles' tummies, and cleaners skim surfaces with soft cloths to sop up remaining beads of water after a special drying-agent rinse. Technicians pamper cars' cabins as well, vacuuming interior floor mats and seats and wiping down windows and the dashboard. The scrubbing service concludes with a silicone tire treatment that imbues rubbery feet with as much sparkle as an engagement ring reflecting off a disco ball.

During the auto-detailing service, multispeed hand buffers laced with compound wax glide over exteriors before cleaners lovingly apply a coat of polish by hand with attention to detail usually reserved for erecting dime-size replicas of the Eiffel Tower. Technicians shampoo interiors, condition leather surfaces, and spot clean troublesome stains and misfired hot sauce, and a coat of Armor All keep cars' dashboards, consoles, doors, and moldings spotless and well-moisturized. The detail service is capped off with a silicone tire treatment and a motivational pep talk encouraging vehicles to return to the road.