It's been cleared to take to the skies for more than a year - but that's not much use when you're supposed to be able to drive it, too.But now the flying car has at least been declared officially road legal.
It means the Terrafugia Transition could be in U.S. garages as early as next autumn, after two years of delays.
It may not be the world's first flying car, but its makers say it is the first to have wings that fold up automatically at the push of a button.
It costs $200,000 - about the same price as a Ferrari - and can be reserved online for what Terrafugia describes as a 'modest' $10,000 deposit.
The polycarbonate windscreens can withstand the impact of birds, so they won't fracture.
The administration has also granted Terrafugia permission to use heavier-grade tyres, which are not normally allowed on multi-purpose vehicles.
It's the second hurdle the Transition had to overcome before it could go on sale, after the Federal Aviation Administration ruled last year it could fly with its current weight, 110lbs over the normal legal limit for light sport aircraft category.
Terrafugia had originally hoped to deliver its first production vehicles as early as this year, but after problems with suppliers it has had to delay the release date to late 2012.