Fullformexpand.com, 2026. "CNGHEB." Accessed April 29, 2026. https://www.fullformexpand.com/cngheb/compressed-natural-gas-hybrid-electric-bus.
"CNGHEB." (n.d.). Fullformexpand.com. Retrieved April 29, 2026, from https://www.fullformexpand.com/cngheb/compressed-natural-gas-hybrid-electric-bus.
CNGHEB. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/cngheb/compressed-natural-gas-hybrid-electric-bus (Accessed: 29 April 2026).