Looking funky Shane
In a weird way, it sort of looks like Envy and Gravity 5 could be brothers or something, the fact that they're both flippers, have the long front wedges and have almost identical looking go-kart wheels and similar wheel-mounting locations. Hell, they could even be considered as having been 'born' together since they're both getting made at the same time. Then again, this could just be the hangover/sleep deprivation talking

Is that tube fixed in the middle there solely to add some rigidity to the bulkhead chambers on either side or is it going to double up as some sort of buffer tank??