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Green. For such a cool color, it’s a hot topic, especially when it comes to traveling, where so much is new and disposable. The good news is that hoteliers have caught on to the green movement, so things like LEED certification, solar panels, water conservation and towel recycling are becoming almost commonplace. But then you have the real vision­aries — those who look beyond the common to offer creative ways to ease the traveler’s conscience and keep the world a little cleaner. Hotel Arts Barcelona (www.hotelartsbarcelona.com) is leading the way by offering a fleet of electric Smart cars to its Club-Level guests on a complimentary basis. These compact eco-friendly cars are perfectly suited for exploring the city via even the most narrow of its calles. The Four Seasons Hotel San Francisco (www.fourseasons.com) is working with Enterprise Rent-a-Car to host the city’s first and only electric-vehicle rental program, with a charging station on the hotel’s property. Available exclusively for hotel guests, Nissan Leaf electric vehicles are perfect for investigating the gorgeous Bay Area. And the Fairmont Waterfront in Vancouver, the Fairmont Hotel Vancouver and the Fairmont Empress (www.fairmont.com) in Victoria, British Columbia, are taking it a step further: These three hotels have charging stations for your electric vehicle (EV). Guests and EV drivers in the area can simply swipe a card, then plug in and charge their vehicles at the stations. And using this service has rewards — hotel guests will receive complimentary valet parking for the duration of their stay (a savings of $40 per night), and locals having dinner at the hotel also get free valet (with a minimum purchase of $100). It pays to plug in.