combined with ‘scuttlebuggy’ in the comic, I’m pretty confident that scuttlevehicles are carts pulled by scuttling insects, since ‘buggy’ and ‘coach’ are both words used primarily for horse-drawn vehicles, and as far as we know, trolls use wheels for things, so to use the word ‘scuttle’ for a self-propelled vehicle doesn’t really make sense.
but imagine a giant bug bus that swallows and vomits its passengers at each stop! Can’t sit down too long or you’ll get digested!
hey, nothing says it can’t be both! i, for one, welcome the possibility of a big bug pulling along a huge disgusting larva on wheels.