These buses retire from their daily services pretty early.
Saw 2 Wrights OFF SERVICE leaving Eunos Interchange at around
late 7pm plus.
Yes, I missed the last Wright bus on 60 yesterday evening. Was on
196 returning to Bedok interchange when I saw the bus just left the
interchange. 
Took the next bus 60 to camp for the next Wright trip from Eunos
interchange. On my way, saw an off service Wright driving into PIE.
-_-" Then when I reached Eunos, another Wright went off service and
drove into Sims Ave. How unlucky... 
But they are really quiet when I saw them in action yesterdat,
much quieter than the current B9TLs.
So are the Wrights on service today for 60 and 185??? Gonna
catch them today.