Nanowalkers that carry molecules

[JKPolk]

From the article:

A research team, led by UC Riverside’s Ludwig Bartels, was the first to design a molecule that can move in a straight line on a flat surface. Now this team has found a way to attach cargo: two CO2 molecules, making the nano-walker a molecule carrier.

Full article

What do you think this means for the world of science? Things have already been getting to smaller and smaller levels, and now we officially have the capability to have nanomachines do something productive. How quickly do you think this technology will develop?