Where I'm at they've replaced nearly all of our diesel buses with natural gas. They certainly look a lot cleaner driving down the road and I'm guessing they ar

Where I'm at they've replaced nearly all of our diesel buses with natural gas. They certainly look a lot cleaner driving down the road and I'm guessing they are cheaper to operate as well. Something like that might be a good intermittent step for a lot of these places while the cost on electric buses comes down.