Okay, where to start?
Firstly, it is in CN paint, which is cool, but would like to have seen earlier CN "Zebra" paintscheme as well.
A nicely modeled engine, in my opinion:
An excellent cabview, a nice change from the regular SD40.
All features of the real thing seem to be there, accurate horn placement, class lights, and winterization hatch over air intake.
The paintjob is very well done...
The horn and bell sounds are, well, default SD40 sounds, so....
The actual engine sounds like the GP40 from the Portland Terminal, so not very realistic there.
The brakes kind of suck.
When you turn the wipers on, and view them outside, they go really fast, and look kind of stupid.
The bell does not physically move when it is ringing, so...
All and all, I would recommend this engine, but only if it is on sale, because I think it needs a little work...