Bus weighs ~30,000 pounds. Car, ~4,000. So I would question this stat. At full capacity, a bus would be able to pack more people, in a much smaller space than

Bus weighs ~30,000 pounds. Car, ~4,000. So I would question this stat. At full capacity, a bus would be able to pack more people, in a much smaller space than a full capacity car, so there's your savings in fuel. Plus I would assume that one, larger engine in a bus is more efficient than ~10 smaller engines. There's also the hidden cost of manufacturing a bus - does one bus take less resources to manufacture than the cars it may be able to replace? According to, https://en.wikipedia.org/wiki/Energy_efficiency_in_transport#Buses https://en.wikipedia.org/wiki/Energy_efficiency_in_transport... "A commuter service in Santa Barbara, California, USA, found average diesel bus efficiency of 6.0 mpg‑US (39 L/100 km; 7.2 mpg‑imp) (using MCI 102DL3 buses). With all 55 seats filled this equates to 330 passenger mpg; with 70% filled, 231 passenger mpg.[51]" [51] http://www.nrel.gov/docs/fy00osti/26758.pdf http://www.nrel.gov/docs/fy00osti/26758.pdf