Many urban drivers in wealthy countries still find themselves worried about the limits of an electric car’s battery, but range anxiety takes on a new meaning when out on a safari. The risk of being stranded on a savannah in searing heat is not one that many safari tourists want to take. But that hasn’t stopped South Africa’s eco-safaris from trying to push electric mobility to its limits. In the solar-powered luxury lodge Cheetah Plains in South Africa’s world-famous Kruger Park, they use electric all-terrain vehicles whose batteries are recharged by solar energy. Numerous other lodges are als…