That's it. My first character in GH2 will be a trucker.
One consideration on this is that, as a freelancer, your work is not particularly guaranteed. Businesses are pretty advanced in this setting, with their own military companies to guard their valuables.
However, some things are in short enough supply that, if bought and sold between the right bidders, might require a special arrangement due to risk of theft. Therefore, a character of lawful... or for that matter, sufficiently chaotic... reputation might just become a part of this, the former for those who are certain to deliver, the latter for those who shall be intimidated into cooperation in crime.
I guess.
You know, like trading stolen Mona Lisa's and such.