Before the advent of the car, it took commuters on horseback years to train their four-legged vehicles to whinny the high-pitched notes of "La Cucaracha." Keep your car in sing-song shape with today's Groupon: for $49, you get a summer car-care package, which includes an oil change, an AC inspection, a battery inspection, a brakes inspection, a charging-system inspection, a window treatment, a tire rotation, and a fluid top-off at Joe's Auto Service in Hamburg (a $129 value).

The ASE-certified mechanics at Joe's Auto Service spur cars to reach their utmost potential with function-enhancing vehicular services. Car coddlers will spoon-feed up to five quarts of semisynthetic oil into the summer-dried throat of your automobile, causing the car to gulp greedily like a poet with writer's block drinking alphabet soup. Capable hands comb the air-conditioning system to ensure it's running smoothly, and a battery inspection brings investigative expertise to the underside of the hood. The mechanical medics check the charging system, top off all fluids, and interrogate the breaks to determine if they work safely and properly. Finally, Joe's staff will apply window treatment, which cleans and coats the glass with a weather-protective substance, before rotating the tires to even out tread wear, promote longer tire life, and diminish bickering over who gets to sit beneath shotgun.