Auto shows are the safest places to practice pretend engine noises without attracting feral lawn mowers in heat. Rev up with today's Groupon: for $12, you get two tickets to the 2011 Dallas Auto Show, running April 7–10 at the Dallas Convention Center (a $24 value).

The Dallas Auto Show celebrates it 30th anniversary in 2011 by showing off 700 of the world’s newest cars, trucks, and SUVs from more than 30 manufacturers, a showcase of vehicular innovation covering more than half a million sprawling square feet. This year's Dallas Auto Show sports a group of green exhibitors, with manufacturers highlighting planet-pampering hybrids, such as the Nissan Leaf, Chevrolet Volt, and Toyota Prius V. Automotive enthusiasts of all ages can spend hour after hour kicking tires, smelling new-car smells, and learning the ins and outs of the latest produce from the world's foremost car farmers. Autophiles looking for a more active experience can take part in the all-new ride and drive event, during which attendees can get their kicks behind the wheel as they test drive new road-rompers from Ford, GM, Kia, Toyota, and Subaru. Cameras and video recorders are allowed inside the fest, helping guests preserve their memories, enhance their online dating profiles, and remind their old family wagons that they can be replaced.

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