Please help ! We are coming to Gothenburg for a conference from Jun 4 to 8! But we have flight to Copenhagen arriving on 3 and returning on 13 morning. We want to do sight seeing and trying to understand what makes more sense renting a car or using other ways of transportation. And if renting a car can we do it at Copenhagen to use the car in Sweden. Please help! Also any suggestions on places to visit are welcomed Thanks in advance!!!