A dirty car is an unloved car, and an unloved car is much more likely to write a memoir about its unhappy childhood. Avoid literary immortality with today’s Groupon to Gateway Auto Service’s West Randolph Street location. Choose from the following options:

• For $20, you get two Supreme Service hand car washes for a car (a $40 value).
• For $24, you get two Supreme Service hand car washes for a midsize or full-size vehicle (up to a $48 value).
• For $65, you get an Express interior and exterior detail for a car, midsize, or full-size vehicle (up to a $130 value).
  
  

Gateway Auto Service's car bathers wield sanitizing suds to remove dirt clods and insect goo during each half-hour Supreme Service hand car-wash session (a $20 value for compact cars). Wheels and rims are cleared of tar and clinging bats before nimble-fingered technicians deftly clean out door jambs. Streak-banishing buffing polishes glass surfaces such as windows, windshields, and crystal ball GPS systems, and dashboards and middle consoles are wiped clean of germs and fingerprints. Finally, powerful vacuums reveal rugs' true colors, and technicians dress tires and leave the car with a pot-roast-scented air freshener.

Indulge vain vehicles with special attention from a detailing crew, who beautify interiors and make outsides glisten with an arsenal of solvents and waxes. In a refreshing washing and drying session, cars' wheels are cleaned and dressed, windows are wiped, and interiors are briskly spruced. Finally, auto bods are buffed with Carnival wax that helps them to shake off scratches and oxidation and slide smoothly into place on the nearest carousel.