Neglected cars try to escape their owners by parking in tow zones or running away from their garages to join the demolition derby. Keep custody of your car with today's Groupon: for $50, you get $100 worth of automotive window tinting at T&T Tinting Specialists.

Dimming panes since 1982, T&T Tinting's factory-certified technicians adorn windows with attractive and temperature-lowering FormulaOne automotive films that are protected under a national lifetime warranty. Window films come in three styles and range from the soft charcoal accents of the Classic series to the UV-blocking films of the Pinnacle series, which provides a nonmetalized film that won't interfere with radio-frequency-powered technology or Ouija-board transmissions from phantasmal back-seat drivers. Customers can shield windows from the sun's acute dazzle ($65–$144) or infuse a common sunroof with a smoky-gray tint that deters up to 70% of incoming heat and 95% of glare ($25–$50). Otherwise, safety and security films add a protective barrier to windows, shielding passengers from shattering glass during an accident and deterring thieves or carjacking extraterrestrials while the car is parked.