When looking at battery tech for (PH)EVs, I came across an interesting experiment converting a school bus into an electric vehicle.
Technically, school busses (and city busses and most delivery vans) seem to be a great early adopter to become "electrified", not just because of their frequent stops (regenerative braking advantages), and air pollution (noone likes stinking diesels in urban areas), but also because they run short trips (no more than one day at a time).
ZEBRAs seem to have a very bright future in PHEV tech.
Rob