Why Archer Aviation and Other "Flying Car" Stocks Took Off Today

Archer Aviation (ACHR 1.94%) has a new deal to collaborate with the National Aeronautics and Space Administration (NASA), and the agreement looks like a validation of the "flying taxi" start-up's engineering. Investors are excited about the development, sending shares of Archer up as much as 15% on Monday morning.The announcement seemed to rekindle interest in the once-hot but lately out-of-favor sector, sending shares of Lilium (LILM 4.25%) up by as much as 13% and Joby Aviation (JOBY 1.78%) up by as much ...