I saw quite a few people on their recumbent in Dallas' White Rock Lake Park on weekends. The recumbent are so slow that they almost weren't moving (I saw the leaves passed by them from underneath being swiped). Once when I came up from behind one of them, I thought it was stopped and was worried I nearly ran it over . Isn't it not only unpleasant to be slower than anything around you, but also dangerous if there is a bike, car, big truck, etc., on the road? They could also be run over by another bike and quite easily invisible to a vehicle driver until too late. Those people were almost lying on the ground.