>>6426936>>6426938>>6426943I want to say the pins are probably on the back. The Full Bottles slide into slots sort of like the Shift Cars and Signal Bikes. It'd make sense if that's where the pins went seeing how the Transteam Gun works. And you can see the Rabbit Tank Sparkling can has some protruding stuff on the back.
This is probably why they're only showing the Full Bottles from the front. Probably ain't a pretty sight from any other angle.
