So if GNE can benefit from extra BSOG payments as well as fuel savings, why are the evening 6A/X30 boards being run using heavy duty binge drinking Citaros and Omnicities when an E200MMC or StreetLite could be swapped in place at the MetroCentre?

I know it's a pain passengers needing to change bus but surely the fuel savings / BSOG payments would compensate.