Water thrives when under pressure, much like spelling-bee finalists and fast-food drive-thru operators at the Indy 500. Unleash pressurized power with today’s Groupon to Express Auto Spa in Waukesha. Choose from the following options:

• For $15, you get three Pro Shine exterior car washes (a $36 value).
• For $25, you get five Pro Shine exterior car washes (a $60 value).
• For $30, you get three Pro Shine exterior car washes with full-service upgrades (a $66 value).
• For $50, you get five Pro Shine exterior car washes with full-service upgrades (a $110 value).
• For $75, you get a Supersonic detail for a two- or four-door car (up to a $150 value).
• For $90, you get a Supersonic detail for an SUV or truck (a $185 value).<p>

Express Auto Spa’s skilled staffers use automated wash tunnels and Armor All products to carefully rejuvenate grime-ridden rides from the inside out. The Pro Shine exterior car wash’s pulsing jets dislodge grit, grime, and caked-on stop-light glare before flushing the underbelly to wake up sleepy autos with a character-building splash. A Bulldog tire and rim cleaning accentuated by Armor All shining products keeps road-greeting rubber well dressed, and a bug-and-salt blast zaps away rust-causing minerals. Triple-foam polish adds gleam to downtrodden rides, and a generous coating of Armor All body shield locks in the freshly minted flavor. A spot-free rinse coupled with a drying agent, a smooth-air dryer, and a delicate towel dry finish out the exterior treatments.

During the Supersonic detail, specialists supplement the Pro Shine wash with an interior Armor All treatment and sudsy floor-mat shampoo. Express Auto Spa’s top-of-the-line detail package also features a coat of hand-applied wax, imbuing exteriors with more shine than a new penny made from concentrated sunbeams.