What is the life expectancy of a CNG engine in transit bus application?
What kind of infrastructure is required to facilitate NG or RNG re-fueling?
Is there anything that prevents natural gas from being used for long haul applications (over 500 mile routes)?
What is the cost of RNG vs CNG?
What is the best operational metric for comparison to diesel? MPG or CPM?
What +/- % of R&M do you see with a CNG tractor over its life ?