Actually, I like your engine. I apologize for the "effects" (sparks, smoke) - they are, you can rework it, but it is far from the primary task. DX9 .. if could move the engine to DX10 - soft lighting and shadows, hd textures (take vegetation, the flat is very noticeable, there is not enough...
Have you tried crowdfunding? That’s why we need money to completely refresh the project, replace the engine with “unity” for example.
А serious unity example:
You have not tried to look for investors?, there is a lot of work, and the potential is excellent, plus, at the moment this is the only normal f2p network racing game. To think over paid content, advertising, and the endless development of the project as in any other large ones (you can invent a...
For example, it may rain or begin to rain, which will impair visibility(+Drops on the image) and handling. It also adds a good atmosphere. In TA, you can add the choice and wear of rubber.
Make 10% of races with rain, the race is over - run rain in one of those in the process to maintain %.
From...