This honestly looks like a complete joke of an addon.
Firstly, the 3D elements look truly terrible in some places. The devs seem to think 'UE4 = Pretty no work', when that is simply not the case. Flat shaded bright coloured textures are abundant everywhere throughout, resulting in it looking more like a children's cartoon. The NPCs look absolutely abysmal. None of them look like real people, looks like they've been chosen from a stock pack of 'stupidest looking people' from the unity asset store. Finally, the bus that is meant to stand in for buses they couldn't get permission for looks like a completely slap dash job. The absolute least they could do was model a decent generic bus, considering you'd be paying £20, is that too much to ask?
The UI is looks awful, looks like something 11 year old me would've quickly put together in PowerPoint 2010. It's seriously embarrassing really. The progression thing really doesn't work with unlocking things in simulator games imo, you're driving buses, not training Pokémon!
It doesn't seem to be much more than AOD2 to me. You've got your minimap, your chat (which is meant to be multiplayer), your company, and your account, except with some poorly made 3D gimmick designed to drag people in. Also seems they've tried luring people in with the whole multiplayer, 3D etc, when behind all the stuff you don't at all need, it's just AOD2 essentially.
From what I've seen as well, the VBC thing doesn't seem very well thought out. Looks like they've pulled a train fever, and not allowed companies to play competitively. Maybe a future update for a feature which should've been there in the first place? Whoops.
But anyway, in conclusion, I seriously wouldn't recommend this, the whole thing just looks like a money grab to me, very poorly thought out and presented. But if you're prepared to look past all of these things, then hey, you've got a perfect game. Right?