Re the Coq - live in Calgary and have driven it a few times - basically a straight thru interstate with decent views in places and lots of big trucks!!
As noted its only from Kamloops to Hope. Drove out that way 2 weeks ago becos I was in a hurry - but came back last weekend on the old #1 thru Fraser Canyon past Hells Gate etc. IMHO a far superior drive - altho 80km or so longer. There are camping spots along the way as well as a lot of decent spots to stop and view. There's nothing on the Coq but pavement!!
As an aside you can see why it was built. The old road must have been hell before they finished it - a lot of it is only 2 lane - and you can also see a few run down spots on #1 that have suffered greatly for lack of traffic. But its a great drive!!