(01 Sep 2022, 8:38 pm)L469 YVK wrote The big question for the X21/X22 is given that GNE unexpectedly ended up with StreetDecks rather than E400MMCs on the X1 including extensions to Peterlee, could the X21/X22 in theory not cope with StreetDecks?
I doubt that would happen anytime soon now. But are the X21/X22 fully demanding enough for an E400MMC?
While they would probably be fine, the Volvo B7 Gemini's were a dream on there really with their rapid acceleration, in the greater scheme of things the MMC is probably the best option. It keeps the decker fleet standardised, it allows for a more flexible allocation, and the power is there on some journeys where it's really needed.