Making sure your car is as spick-and-span as the day it followed you home is important for maintaining man/machine friendship, which, if left unmaintained, can lead to heartbreak and engine failure. Solidify your bond with today's Groupon: for $79, you get an express interior detail and an exterior hand wash at Crystal Clean Auto Detailing on Eastern Avenue (up to a $207.98 value).

Trusted by more than 20 local car dealerships, Crystal Clean Auto Detailing revives groggy vehicles from their grime-naps with top-quality products and state-of-the-art techniques. Its experienced wash-and-wax wizards will discard your ride's muck mask with a meticulous exterior cleansing that includes a litany of dirt-hunting maneuvers, from a hand wash with pH-balanced soap to a thorough wheel flossing and hand-dry finish. The wash is augmented by protective measures, such as a high-gloss polymer sealant and water-repellent window treatment. Since vehicles, like blisters and overripe tangerines, often use attractive exteriors to mask their ugly insides, Crystal Clean also tackles interiors. Detailers vacuum, wipe, dust, and condition, scouring and revitalizing every square inch of rolling real estate.