Of course, closely related to 'Buckyballs' (Buckminster Fullerene) and CNTs (carbon nanotubes). The latter I suspect are what might be of most interest to detailers in the future but that is a long long way off. In theory, I guess, if one could achieve some self assembly from wet chemical origins, it would be possible to do some pretty spectacular surface modification.
For now I would be content to see more conventional nano particle technologies advancing. Inspite of claims made by many, we do not have durable super hydrophobic/philic surface modifications, at best we have strongly hydrophobic coatings with some not even warranting the 'strong' adjective! These are things which we can actually achieve in the lab so, with a bit of luck, one of the big money industries will want to develop to the point they will adhere to organic polymers and can thus be transferred to automotive application.
For detailing, the big thing will be to chase away the deceivers who are using 'nano' as a buzzword so that genuine nano products don't get swept away with assumptions based on non-nano product performance!