Another interesting tidbit about this, scientists have discovered how to grow (yes grow) brand new teeth complete with roots and enamel. By combining cells from human gum tissue and tooth-inducing cells from mouse embryos, they were able to grow real teeth and the next step is to perfect it for clinical use (although it can be used now).
Also Steak and Shake burgers are alright, their shakes are good though. There's no fast food (as in drive though) place that has a lot of different shakes (other than the standard and Oreo) here in LA, which seems like a pretty untapped marketplace to me.