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 $70, you get an express auto-detailing package from ShineRite Mobile Detailing Service (up to a $140 value).

ShineRite's fleet of car-beautifying technicians rolls up to cars, trucks, and SUVs, detailing roadsters right at clients' homes or workplaces. The express auto-detailing package (an $85–$105 value) begins with a thorough wash that pierces through layers of dirt, dust, and fossilized bugs. After a careful waxing prepares vehicles' surfaces to twinkle and wink at passersby, a full interior vacuum takes crumbs and debris on an out-of-car whirlwind tour, setting the stage for tires to be dressed in shining gloss. An engine degreasing (a $35 value) finishes off the auto bath—besides removing all the ugly, built-up slime, the treatment makes it much easier to hold on to the engine when you're wrestling it for extra horsepower.