I think you highly exaggerate the amount of potential ground transport commerce that would exist via Panama/Colombia.
Also, drugs into the US instantly tripling?! No way... the major cartels don't smuggle that much by individual vehicles anymore, it's too easy to detect the contraband, especially between South America and the US. Large quantities go via container ship, rail, in those cute Colombian coke submarines etc... much easier to get lost in the flow...
In any case time will tell, nothing ever stays the same...
Submarines have not been in use there for years. I think you seriously underestimate how many drugs are potentially coming out of Colombia. Hundreds of millions of dollars. Have seen what's happening in Mexico? Guess where all that crack comes from? It's absolutely tragic.
Anyways. I really hope the ferry doesn't cost an arm and a leg. It'd be so fun to take some day. Some day.
First one to do it. Please post here with details.
[ Edit: Edited on 27-Jan-2014, at 17:39 by i c e ]