The trend toward smaller cars.....

.....may be getting a little out of hand. This snazzy little jalopy, built in Houston, has a light-powered motor, a sturdy chassis, and "buckyball" wheels. It's 1/20,000 of the width of a human hair.

Seriously, the fact that working nanoscale machines -- even very simple ones -- are now being built shows that we are making progress toward realizing the promise of nanotechnology.

The Singularity is near!