Archer Aviation has achieved key milestones, and regulators have finalized rules to pave the way for flying taxis.For decades, humans have imagined zooming through the sky in flying vehicles to whisk you away to wherever you need to go. That idea has yet to take off, but with modern technology, flying taxis are going from an idea of science fiction to a reality -- and it could be coming to a city near you soon.Archer Aviation (ACHR 0.23%) is one of the pioneers of flying vehicles, and is one of the best-pos ...