ALTERNATIVE FUELS: Is natural gas's 'chicken and egg' problem really over? Blake Sobczak, E&E reporter Published: Friday, June 28, 2013 Which comes first, the natural gas vehicle or the natural gas refueling station? Please subscribe to EnergyWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.