I wonder if potentially Indian food has a lot in common with Mexican food. In that I mean that they both involve a lot of preparation. We always joke when we go to Mexican places that they must have microwaved our food because it comes out so quickly. When you consider the rice, beans, and protein is probably all cooked ahead of time and they just need to assemble it and melt the cheese, it isn't that surprising though. I feel like Indian food probably deals a lot with developing the flavors over time and just throwing the end products onto a plate probably doesn't take that long.