The top three most efficient modes of human-powered transportation are (in no particular order): Flintstone cars, bicycles, and 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 $29, you get a deluxe bike tune-up at Auburn Bike Works (a $75 value).
Auburn Bike Works' skilled mechanics prepare bicycles for a season of smooth cement sailing with a deluxe bike tune-up. One of these two-wheeler techies begins by making adjustments to brackets, headsets, and hubs before dialing in the derailleur gears. They'll also check and adjust brake cables to ensure riders can stop safely and quickly, potentially preventing injury and head-on collisions with road-crossing dimes. Afterward, wheel truing and chain lubrication settle the nerves of wobbly wheels and keep links from locking up. Cycles are then washed, dried, and released into the custody of their responsible owners to ride, perform tricks, or train for velocipede rodeos.