Without cars, people would be forced to walk to their destinations and stick their favorite bumper stickers on roombas. Keep your vehicle rolling with today's Groupon: for $20, you get an oil change and tire rotation at Ashley Automotive in Lewisville (a $49.98 value).

Technicians at Ashley Automotive hoist foreign and domestic cars of all makes and models in the shop’s seven bays as they facilitate peak mileage and performance. During oil changes, mechanics drain vehicles’ grimy lifeblood, replacing it with up to 5 quarts of fresh conventional lubricant (with an additional fee for synthetic oil) and a new filter to prevent the car from reading its driver’s thoughts. Next, techs fan out tread wear during a tire rotation, repositioning tires to increase longevity and traction. While in the shop, drivers can take advantage of the facility’s many services by taking 10% off repairs of up to $50 that same day, enlisting a skilled technician to reward their car for its hard work, or punish it for spending too much time playing with jumper cables.