> Busses are such good vehicles for batteries, that for some routes it may even make sense to run them with super-capacitors, with chargers embedded in the road

> Busses are such good vehicles for batteries, that for some routes it may even make sense to run them with super-capacitors, with chargers embedded in the road at stops. I would think busses are a very poor fit for batteries: their economics favours driving around for as long as possible (switching drivers in shifts). Any time spent charging is a waste. This is less favourable than a consumer car, which sits around unused for most of the time (hence easily charged) and usually only makes a few short trips a day (e.g. commute). I can understand the desire for supercapacitors on busses, since they are much quicker to charge than batteries. Putting chargers in the stops is a way to mitigate the low energy density of supercapacitors: they only need to last as far as the next charging point. I think supercapacitors + fast charging stops makes busses very suited for electricity; but I don't think they're best suited for batteries (the fact that there are battery-powered busses shows that there's enough wiggle-room in the economics that they can work despite this unsuitability).