The analysis assesses the potential of Joby Aviation (JOBY) and Archer Aviation (ACHR), both involved in electric vertical takeoff and landing (eVTOL) technology. JOBY's stock is up 96% within a year, trading around $14, while Archer is down 24% and trades around $7. Joby has early certification lead. Joby is trying to control everything from the aircraft to the air taxi service, while Archer uses a two-track model. Archer has around $2 billion in liquidity. Over the next 12 months, based on this analysis, Joby is posed to grow and Archer to go down.