Crikey, a car made up of only one molecule, I can think of no beginning of the practical applications for that…
There’s a nice article explaining clearly how they did it:
Ultimately the team decided to synthesize the axle and chassis via palladium-catalyzed coupling reactions.
I’m sure I would have chosen to do the same thing.
I love nanotech. There’s some great work being done to replicate solar panels that are energy-efficient to produce, and I can see why that kind of thing is useful, but I’m really lost as to the point of this exercise. I guess maybe it’s one of those things that people do as a proof of concept, so that when they do work out something to make with a practical application then they’ll have more of an idea of how to go about doing it, but for the moment this seems exceptionally pointless.
More, including a diagram which tells you very little, here.
I’ll leave the last, inconclusive, words to the writers of the article, who clearly also have no idea what a one-molecule car is for:
The development bodes opening new vistas.