So we've had the Solos in service since 2008 now, just short of 10 years. How long do you think they have left before they'll need replacing by a new Midi/Mini Bus?

This also goes for some of the Pulsars. How long do you reckon they have left before replacement, and what do you think will replace them in the future? A newer Wright bodied vehicle? Enviro 200MMCs?