I really love the way some people discourage legitimate questions. Take it easy next time, Darmok and Jalad @Tanagra.
The law does seem open to interpretation.
Terry, 230RN
I don't see how anyone can interpret the law any other way than the way it's written. The OP said he was already 99.9% sure about the law.
His question went from a broad general question
Pistol transport in car; can be soft case right? No need hard case?
What about long guns?
As long as enclosed, unloaded, OK right? No ammo nearby.
to a specific gun case
Yes, I have this one
http://www.blackhawk.com/product/Padded-Weapons-Case,137,134.htm
And I put inside AR15, and 3 handguns.
Is good no?

to a specific location
The other sidebar to this post of course is the fact that I bought new firearms! That is why I need to transport to HPD to register!
The original posted information,
Enclosed Container means a rigidly constructed receptacle, or a commercially manufactured gun case, or the equivalent thereof that completely encloses the firearm.
to me is plain, simple and doesn't change based on the number of guns, type of guns, or destination. Only when flying do you need to look at other regulations imposed, not by Hawaii, but the TSA and airlines.
If you think I'm being tough, maybe I was trying to impress upon the OP he needed to take some time to research, read, and understand the laws from the source. THEN, if he needs clarification, asking a specific question referencing the source would not take 2 pages of comments until we dragged the real questions out of him.
We all need to take responsibility for at least reading the state laws on firearms (several times!!). If we can't even do that, then what do we hope to contribute here?