skos:altLabel | - natural gas
- gas
- CNG
- ''EcoChic''
- ''Natural Power''
- (CNG)
- Bio-CNG
- CNG vehicle
- CNG-hybrid buses
- CNG-powered
- Compressed Natural Gas
- Compressed Natural Gas (CNG)
- Compressed natural gas (CNG)
- Compressed_natural_gas
- EcoFuel
- Natural Power
- compressed natural gas
- compressed natural gas (CNG)
- compressed natural gas vehicles
- natural gas (CNG)
- natural gas fuels
- natural-gas
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