The game exists for over 5 years now, and lots and lots of people have asked it even back when it existed just a year. By saying that, I think we really need glass right now. Having them actually have the same customizing as fuselage blocks, but being glass. I'd be awesome and I am 100% sure that I am not the only person thinking that.
Having them being added would be awesome!
Added later on: Maby even add shards if the glass breaks, which can puncture the wheels maby? Would be cool, but also heavy on physics i think.
@AndrewGarrison