I think what is meant by Vacuum vessel is the type that use a outer chamber that is held in high vacuum surrounding the inner holding chamber like many liquid oxygen or nitrogen tank systems use.
Now that said the problem with transporting energy via a liquefied medium Vs direct conversion to electrical power for any reasonably long distance is easy to see where a simple high voltage multi phase power line is magnitudes of order more effective and efficient over the physical conversion transport and re conversion method. Just do the basic math and it pretty easy to see where power lines win.
On top of that if large quantities of energy need to be stored then used in a efficient and high power level application simple old fashioned pumped water storage is impossible to beat on the scalability cost per unit of energy stored and overall low cost of operations plus its byproducts have multiple positive secondary values as well.
That;s why you don't see trucks transporting what you are pondering on. A simple power line system and a remotely located pumped water power storage system will beat anything else on the cost, scalability and reliability basis.
Now for a bit of basic math to compare.
Her in the us a typical tanker truck is road rated for 80,000 pounds gross weight of which typically that works out in a tanker truck to being around 50,000 pounds of load and 30,000 pounds of truck.
Given that take a single truck load of hydrogen at an energy density of roughly 51,000 BTU per pound a load of fuel has roughly 2,550,000,000 BTU or about 747 megawatt hours of electrical equivalent assuming a 100% efficient conversion.
In reality the conversion is likely only going to be at best 20 - 25% efficient including transport costs and losses where as the power line systems will run at 80+ % efficiency even while covering several thousand miles ore more and can run 24 hours a day for decades for a very low cost per unit of energy transported during it's working lifetime all while achieving very high levels of safety connivance and reliability.