The top three most efficient modes of human-powered transportation are (in no particular order): Flintstone cars, bicycles, a palanquin carried by the various monarchs you've conquered and overthrown. Make sure the most feasible of these is in perfect working order with today's Groupon: for $40, you get a deluxe bike tune-up (an $85 value) at Behind Bars Bicycle Shop, located in the Arts District on Thirteenth Avenue Northeast.

A full-service shop that stocks plenty of biking gear and breathes life into ailing cycles, Behind Bars employs experienced staff who can help you attain absolute pedal power. Today’s deal restores your favorite penny-farthing or velocipede with a deluxe tune-up, which includes everything from a safety check and air refill to lube service, wheel truing, brake and derailleur adjustment, a full drive train inspection and cleaning, and a careful bathing of your bike’s body. Parts and any additional labor cost extra.

Reviews

Citypages readers voted Behind Bars Best Bike Shop in 2009. The shop was featured in the Star Tribune and five Yelpers give it a perfect five-star average:

• Everything about the shop and the design exudes collaboration, hard work and a very specific vision. Little details around Behind Bars set it apart from other, more traditional, retail spaces. – Ann Kendall, Star Tribune
• They've got all manner of gear and parts for the DIY sort. For the lazy/butterfingers type person such as myself, their service is quick and well-done – Nick S., Yelp