we use a relaxed part-time kind of elimination communication with dd where she still wears a nappy but uses potty/toilet at each change. on a long journey using service stations i found baby changing rooms never seemed to have toilets so i was holding her over toilet to wee then struggling to get nappy back on balancing her on my knee! surely there are plenty of other people whose children wear nappies but use toilets, especially on long journeys?