Green Shuttle is the way to get from PDX to where you want to go In Portland! I found this shuttle while wandering around my own neighborhood- a shuttle was parked in front of the driver's house, so I called the tel # written on the side. From PDX to my house costs $16 for 1 person, $3 for each additional passenger, if you book 24 hrs in advance, and you can pay with a credit card when you get in! I run a guesthouse and always hook my guests up with Green Shuttle. Other shuttles cost twice as much. One thing to be aware of: you must book in advance, or you will get the Green Cab option which is $25-30. I'd give it 5 stars if it weren't for occasional issues with communication ( not all the drivers speak English) and a couple of instances of "getting lost". But overall, I love Green Shuttle! read more