Segway

Not having children was the best decision I ever made,

he said, and invented the Segway instead.

It was called 'Ginger' at first,
nobody can say why,
then plain 'It',
such were the expectations
It might help us to fly.

Is that it? Diane Sawyer asked at the unveiling, to laughter from the assembled group,
more in response to her wit
than to It.

Then the man who bought It, the company,

promptly rode his off a cliff, 

and the price plummeted

along with It. 

He has a helicopter too, the man who invented 'It', 

and a car and legs, but what he really wants now, he says, 

is a time-travel machine. I bet.