Programs like 3d Coat and Zbrush have autoretopoloy tools which will get you most of the way there, then you would have to manually retopo some areas to fix up parts of the autoretopo that aren't as good as you like.

There are a lot of people dreaming of exporting nice all quad sub'd meshes from nurbs/CAD packages. If someone develops it they will be on a winner. At the moment those two programs listed above do a pretty good job.

Also take a look at ViaCAD/Shark & FormZ as they have recently released sub'd to nurbs tools.