The title means "free time," and I've got a lot of it. So I read.
Here's something I found pretty exciting.
Fuel cell motorcycles
It's not so much the motorcycle part, it's the whole idea of fuel cells. I'm not a fan of the way the highway system cuts apart the ecosystem, but if we're going to keep traveling at high speeds, this seems like the way to go. And they could become a regular thing in the next couple of years!