A fanciful and impractical play thing.
There is a long history of wind powered vehicles that are justifiably lost
in the dustbin of history.
Perhaps the most telling image is this one, now more than 370 years old:
Flora’s Wagon of Fools, (Hendrick Pot, 1640.)
A viciously satirical allegory for the 1630s
Dutch Tulip Bubble, which is to say
foolishness run amok.