I personally think software development nowdays is too heavy for two or three guys, peoples expectations are way too high in all area (graphics, physics etc), even for a experienced developer like Scawen things are getting too big to respect his near future roadmap, it's even worse for Eric as I understand very well (being 3D artist myself) how complicated 3D projects are, the more you go into details the more time consuming it become.
Imo I think it's time to focus exclusively on core contents and game strongest area to improve them even further, making even more contents will only make things worse for future improvements, especially for such a small team, so 2 or 3 cars plus 2 track for S3 is probably enough.
What I mean is improving the competition aspect of multiplayer (ranking, safety, matchmaking etc), focusing on immersion and precision of the actual contents (interactive dash, interior buttons etc ), graphics and physics improvements continual improvement, and more importantly is visibility, we have to reach where gamers are.