both 313-317 and 308-309 are MAN, so why do they need to change
buses?
SMB313Y - SMB317Y are probably temporary 980 buses to replace
the striders, as for changing buses, I guess that's not
uncommon.
Remember the times when the 4 newly imported AMDEP A22 buses are
on 167? Also a temporary changed, then replaced by SMB60L, SMB61J,
SMB62G and SMB118E.
Now change again, SMB60L no longer perm 167, with new Citaros
doing the job.
