Military first, then hand-me-downs to police later?
Military would have no use for them. Your problem with a flying car is it’s a worst of both worlds scenario. In car mode you’re going to have these inconvenient wings to deal with, so either your vehicle will have a huge footprint or you’ll have to fold them up like the worst rag top ever. Either way they’ll add weight and drag. As a plane because the car body isn’t aerodynamic in the right way your lift will be limited and its carrying capacity will be low. Then of course you gotta find room for all that gearing to have the engine either turning wheels relatively slowly or a propeller really fast. That will take up space and weight. Rich collectors of oddities would be about the only market for the crappy plane/car.