Ok, since LH is "stupid" I booked my flights to Montreal - but actual
destination is Ottawa.
The no-brainer option is booking YUL-YOW with AC on a seperate ticket. But maybe (with time to spare) there might be more touristish options?

I was looking at viarail - which looks a nice product in "Business" itself, but the track is just thru kinds of nowhere-land (gmaps/satellite)?

Car rental and route whatever? I am a bit "car mad", possible to rent a Musclecar?