It's not like solar powered depots haven't been implemented elsewhere
https://www.transdev.com/en/solutions/en...amsterdam/
Some of the buses themselves are solar powered - Husband caught one when he attended the Intertraffic 3xhibition, earlier, this year http://www.ngvjournal.com/s1-news/c3-veh...ric-buses/
RE: Voltra 2