I was thinking about that, but it wasn't a tricycle. It would fall over when he stops.

Faster than most rowing machines, I expect.

.. or stationary bikes.

Saw a guy today in a recumbent bike that he pedalled with his arms, both at the same time (Like swimming butterfly as opposed to crawl). He was on the road, in the middle of it, with no flag and wearing grey/black/brown/something that blended with the asphalt. He's probably dead now.

Yes, he's dead.

http://readingeagle.com/article.aspx?id=251585

Oh, this one wasn't wearing a helmet.

Too many harsh ironies in that one.

I've wanted to try one of those because of my spinal injury, but only on bike paths. I've only seen one of them around here.

So I saw the weird rowing recumbent again, and this morning I googled for it. It's the Rowbike.

Steering must take some getting used to, and I can see the butt end of the lever hitting terrain and pole vaulting someone.