As a Norwegian I can tell you that your friend is pulling your leg. You are free to drink on private property. I have never heard about anyone being arrested for responsible drinking in public parks, beaches and places like that.
It's not allowed to serve people that is "visibly intoxicated" but almost no one cares. At a normal Friday and Saturday night, Oslo is a battlefield of shitfaced people.
(Norwegian with Nissan Leaf) This is exactly what we do on a long drive. Stop to charge, try to convince the kids that there isn't any happy meals left. They are all out, we promise. No other burgers either.
If it exploded; the outcome would have been pretty much the same, but i'm probably wrong. I assume the amount of KJ is about the same; hydrogen will blow up much faster and much more violent. Petrol tend to "wooooof" into an fireball and expell a lot of the energy in the fire afterwards.
A leak in the petrol tanks at a station won't cause explosions in itself, it causes polluted ground water. Not to mention it's quite hard to get petrol to blow up, you need a pretty specific mix of fuel and air.
Hydrogen pretty much blows up no matter what if there is a leak.
The've arrived in the shops in Norway. One row of three cans are glued at both bottom and top. The two rows are glued only at the bottom. The handle keeps the rows securely together. The glue is some sort of hot glue used in liberal amounts. If anything, the boxes are harder than before to get loose.
They will still be mushy thou.