I'd like to add that there is a big storm chasing community that cant wait for a retail of the game. If we sell it at 50 bucks, they will buy for sure.
Considerate that this project could make you a lot of money
Quote: I released a first demo, that had a lot of bugs [...] need a programmer who can fix the vehicle movements and work on the game interface.
That sounds like a pretty hard job. Debugging is not really funny, especially when working on some one elses code. Maybe this is why no one wants to help you out? However, good luck for your project. I think the game idea is innovative and fresh.
Regards, Zeitwerk
Always learn from history, to be sure you make the same mistakes again...