> A flying car or roadable aircraft is a type of vehicle which can function both as a road vehicle and as an aircraft
https://en.wikipedia.org/wiki/Flying_car
Often times the ground capability is limited but it means your landing strip doesn't need to be next to your hanger - you can drive it down the road a few miles (usually after folding the wings in).
https://en.wikipedia.org/wiki/PAL-V_Liberty