Recently though there has been a Vietnamese food cart downtown called Sàigòn Xích lô. Its caused quite a controversy much like some of the food carts have in other cites. I have never gotten a chance to try the ones in downtown Portland, but there are a bunch with a wide variety of food types. I've hear Medford has a handful as well.
The main controversy with this cart is that he doesn't have a permanent place to park. They just park in an empty space on the street and move every two hours.Click Here for a news story about it. Personally I would like to see more food carts with a bigger variety of food. When I'm at work I don't like to go to a restaurant and sit by myself. I'd much rather pick something up to go and take it back to work or to home.
I've tried this cart a few times and had the first 3 items on the menu. All were pretty good. I wish they just had simple cheap Pho. That's what Grants Pass really needs is good cheap Pho... and Indian food.