I know. But those truck sounds can hardly be called convincing -- the driving sounds are simply sped-up idle sounds -- so it's hard to imagine they'd actually release the game like that on purpose.
There are many examples on YouTube of what big rigs really sound like.
Or check out http://www3.scania.com/en/V8/Global/The-V8-In-3D/ (you may have to select your country) and press and hold the "Accelerate Engine" button.
That's great. Now all we have to do is get it for RNR.