1) If I were a barfly, this is where I'd come to exist as such. The atmosphere is just plain cool.
2) The service is low-maintenance, and brisk
3) The menu is build-your-own, at about $3/taco. Expansive and highly customizable.
I only have one beef about this place: it's hit or miss with my own experimental taco concoctions. Which of course is partially my fault, but I feel like even when I select non-spicy items (my mouth and I don't enjoy spicy), my tacos almost always burn my face off.
I found one winning combination though, and I kept my checklist so that I can enjoy it time and time again...