I can't argue with @remy_martian 's first post but still..
when speeds were much lower and bodies likely quite lighter altogether there actually used to be just a few unusual buses in the northeast usa which were basically a genset engine under the hood paired to trolleys-borrowed (not surprising given the similar axle sizes) traction motor .. somewhere around the 1910-1930's timespan that is
I unforuantely can't find any examples right now due to the way the web is (even an exact search for 'diesel-electric bus 1920' still dumps a lot of modern non-electric bus photos all over, oh well) but I do know at least two different ones had made their appearance in station-related photos in the usa 'classic trains' magazines for one thing tho
when speeds were much lower and bodies likely quite lighter altogether there actually used to be just a few unusual buses in the northeast usa which were basically a genset engine under the hood paired to trolleys-borrowed (not surprising given the similar axle sizes) traction motor .. somewhere around the 1910-1930's timespan that is
I unforuantely can't find any examples right now due to the way the web is (even an exact search for 'diesel-electric bus 1920' still dumps a lot of modern non-electric bus photos all over, oh well) but I do know at least two different ones had made their appearance in station-related photos in the usa 'classic trains' magazines for one thing tho