Yeah... It has cameoed on 179 before..., but not an
x-over.
Last time, on a MK2 on 154 (1738A) along AYE, managed to
overtake quite a lot of trucks! 
And also on 79, at night, along Jalan Buroh, can overtake quite a
lot of trucks. I was on the only NAC MK2 on 79 and took only 25min
from Jurong East to BNL...