When I first heard of LFS, it was almost state-of-the-art game with unparalleled physics (It is only game up-till now in which I actualy enjoy just driving a car). But now, we are entering 2014 and that game is still the same. It is nice and all, that you will make even better tires, but there are other projects, that are way better in many other ways. You need new graphics engine (and by that I mean DX11, teselation, folliage on tracks...). Badly. I love your online stuff, but it is kinda obsolete in many ways. You need new cars, new tracks, maybe singleplayer championship/career...
Why don't you have anything of this? you have 10 years old project, which was on top of the hill - you could easily work on it for 10 years and make it better by every year (EVE: Online - anyone?), you could hire few other people to help you (whilst still managing small company). 10 years have passed and now, there is rFactor 2, there is p.C.A.R.S., there is Asseto Corsa and even iRacing is fixing their physics and shifts to simulation.
Now I've played only p.C.A.R.S. (and when I was playing it, I was enjoying driving in it very much), I know nothing about actual physics in AC, iRacing or rFactor, but those games are advertising themselves as hardsims and they look way better than you do right now. You are missing your train (for like 6 years now).
How can you compete with them? If any of those games nails physics (to your level), you will basically became irrelevant. You should really rethink what you want to have 2 years from now, 5 years from now... Dead legend, or EVE with cars?