We have two of the O2 5" battery operated fans and one 10" O2 fan with the DC cigarette lighter connector.I also have the Hopkins trucker fan but that thing sucks compared.My wife smokes and we use the little fan to blow the smoke out the window when she lites up.The 10" fan is awesome.
The truck stops are great for 12 volt items.When I was over the road trucking with my converted log truck(sleeper and flatbed) for winter work,my wife limited my time at the truck stop 12 volt section.Some cool stuff for sure.I do miss the truck stops!