If the dune buggy and the sewing wheel hadn't enjoyed that fateful tryst so many years ago, the electric bicycle might have never been born. Honor the proud parents of pedal-powered progress by holding tight to the handlebars of today's Groupon: for $37, you get an electric bike rental to tour Napa Valley from Change of Greenery. All bikes can be picked up at 9 a.m. or noon and dropped off before 5 p.m. at the Napa Valley Marriott on Solano Avenue.

Change of Greenery is a touring company that provides electric bicycles with which to navigate the rolling hills and vineyards of Napa Valley. These semi-velocipedes are ideal for individuals in search of a relaxing jaunt through wine country without a gas-powered vehicle’s carbon emissions or embarrassing wildlife heckling. Similar in function to a moped, the bikes can operate in pedal-assist mode—in which velocity is boosted with a push from the pedals—or full throttle, which runs up to 18 mph without any physical aid from the rider. Lithium-ion batteries power a rear-hub motor, allowing for eco-friendly mobility across great swathes of land. All rental bikes come with a combination lock, a removable bike basket, and a cranium-coating helmet for a safe and secure bikesperience.

To further plump the enjoyment factor, upon redeeming your Groupon you'll also be handed a sparkling Napa Valley green card that acts as a passport to 30 different deals from eco-friendly business partners. E-bikers will also receive colorful bike loop maps that clearly point out where the deals are taking place. Enjoy 15% off a cold treat from Three Twins Ice Cream, a two-for-one tea of the day from Tillerman Tea, as well as 10% off room reservations and all spa treatments at the Napa Valley Marriott Hotel & Spa. Winery discounts include two-for-one tastings at Domaine Chandon and 15% off wine purchases from Judd's Hill. For those purchasing three or more bottles at a winery, Change of Greenery will ease the burden of transport by securely retrieving your wine.