Working downtown this summer, I've been relying on food carts whenever I forget to pack my usual ham and cheese or PB&J sandwich. Although I've tried the better known foodcarts since moving to Oregon a few years ago, I have never really given much thought to them until now. I mean, yes, California has long had its roach coaches, but as far as I remember it has never had permanent food cart locations. Does anyone know the history behind food carts in Portland? I'd imagine it has roots in city regulatory reasons.