Electric school buses are a breath of fresh air for children | Nearly $1B in federal funding could help clean up the unequal health impacts of diesel pollution.::Nearly $1B in federal funding will help decarbonize transportation and clean up some of the unequal health impacts of diesel pollution
You can generate a lot of heat with fuel-based heaters. Many buses already use these.
Makes sense to have an aux fuel heat source for EV buses that may deal with cold climate a few weeks out of the year.