Fox, what was this Pacific NW route mate?
I really need to get it written up, sorry. In the meantime...
Flew to Vancouver. Straight down to Seattle in a one-way rental. Picked up my Cadillac ATS from Seattle. Few days in Seattle, went to the San Juan islands, etc.
Then back to Vancouver via Mount Baker. Few days in Vancouver. Amazing city.
Then across the mountains to Banff via Revelstoke. Used a place down the road from Banff as a base, did Icefields Parkway etc. Then round the outside of Calgary down into Montana to do Glacier National Park which has to be the best kept secret of any USA NP. Better than Yosemite.
Down to Missoula Montana for an overnight stop, next day through Montana and Idaho to Spokane, Washington. Then down to Portland Oregon. Then back up to Seattle via the Olympic Peninsula and also Mount St Helens National Volcanic Monument. Also amazing.
Then another one-way to Vancouver for the flight home.
Why Vancouver and the one-ways? Car hire in Canada absolutely sucks - expensive, crap cars, limited mileage for cross border. The US rental market is massively cheaper and loads better. But flights into Vancouver are easier and cheaper than Seattle.