It's that exact information that has led me to believe that I could either tow a kart or two behind me or get a roof rack and put the kart on the rack (with some modification. I weld). Ideally I would like to be able to transport 2. What I really need to do is get them weighed so I know what I'm working with. If the NA can tow 1K, surely the VN can tow more given that it has a beefed up trans, brakes, and suspension (comparatively).The VN GVWR is 4,079 lbs. And the curb weight is ~3,150 lbs. So if you weigh 200 lbs and drive alone, that means you can safely "carry" 730 more pounds.
As far as towing, the N/A Veloster can reportedly tow 1,000 lbs. Structurally, I don't see why the VN couldn't do the same. Even if Hyundai doesn't publish towing capacity numbers.