It's kind of hard to drive helicopters down the highway.
Not more difficult than flying it anywhere else. Just make sure to watch out for wires.
I didn't know flying and driving were synonyms these days.
The only difference is the altitude, and helicopters can go as low as you dare.
I assumed driving meant moving on land with a (most likely) combustion-powered platform that was connected to the land with wheels.
No wheels and no ground contact sounds like hovering to me.