I know the game isn't complete, but what should I have?
I have been designing a game like this for a long time, having spent hundreds of hours on actual engine simulation (professional) software, it's nice to bring other pieces together with things like graphics, sounds etc.
With that said, playing this game is - interesting, lots right with it!
What I'm trying to figure out is, am I supposed to have more than 4 engine configurations? I-4, I-6, V8, Flat plane 8?
I've heard of different versions of this game, looked through the website and I cannot find any other version (except steam, I don't care for steam) other than the "Early Version" that I've got.
I wish I had the ability to motivate this team to actually expand, hire more talent and turn this lump with potential into a final game, with sequels, new game engines, expand on the game. You guys need more programmers and artists (You've done great so far!) You just need more help...
Have you considered a kickstarter campaign? I'm not sure what you've got as far as sales, but if money is the issue, try it, you need more help and you've got a great start.