Washing a car, like performing taxidermy on a marlin, keeps it looking the way it did when it first came off the line. Preserve your greatest catch with today's Groupon: for $10, you get a Triple Shine car wash with interior cleaning at Grandview Auto Wash (up to a $21 value).

For the full-service Triple Shine wash at Grandview Auto Wash, automatic coupe cleansers buff and polish sullied exteriors before a vacuum-wielding hominid sweeps through the inside. Crusty cars cruise through the shower, where eco-friendly suds shimmy across wheels, windows, underbodies, and hood gargoyles, removing unsightly soils. Expunged exteriors shine like a bronze statue of a socialite's dog after a clear-coat protectant and triple clear-coat polish. Finally, a car concierge wraps wet wagons with a terry-cloth embrace until they are cozy and dry, then hops inside to wipe down consoles, swab windows, and quietly propose new bumper-sticker slogans.

Though Grandview Auto Wash sometimes features a discounted price online, this Groupon still offers the best deal available.