I'm uhh... guessing this is a joke, but if it isn't... they'd do brisk business in San Diego!
It would be amazing if real though. Maybe someone can make a hydrocarbon powered version that would actually have enough range. It would use less fuel than a car, and get there faster to boot.
Startup idea?
I think it'd be possible to build a large quadshot-esque quadrotor -> flying wing device that would have the 1-3 mile range and ~500gr non-battery payload capacity necessary for taco delivery.
OMnomnomnomnomOM