[prmoustache]

Well I am a fit cyclist and am still riding completely muscular bikes. Having said that when I am using my trailer with heavy cargo hilly stuff can be a challenge and especially when I am on street clothing and don't want to sweat like a pig. Right now I am living at sea level so it is not a big deal but I can see my astmatic gf wanting an electric engine to help her in the hills when going back from groceries if we couldn't afford the seaside rent and had to live farther. Same with old people, they are totally fine with a regular bicycle in the flat but add groceries and hills and it is a different subject.