It's funny I had a similar experience yesterday on way home, I overtook this guy on a really long hill, He was on a road bike and had all the gear i.e. racing top etc . I came up behind him and waited for about half a mile I was in two minds whether to overtake as he was going fairly quickly for that hill, (I have overtaken a lot slower people ) but as hill got steeper I was really holding back so I took him He caught up at the lights at top of hill and first thing he said was I hope that bike is assisted The devil in me thought about saying no at first but I then nodded . He joked he thought he was losing it