Thats just a theoretical questions (or whatever is the proper writing).
Will you lose the company entirely? Or the new owner can control the shares?
so long as you are the majority share holder you will still control the company. So if you own 30% of the shares but still have more shares than anyone else the company is still under your control. Down side would be that if you own 40% someone could very easily buy up the other 60% and therefore take control of the company.
The owner with the biggest overall share controls the company.
The traffic rights are determined by the largest share of owners home. So if many owners from the same country have a bigger share than any other group of shareholders, then they provide the traffic rights.
Better just to hold a minimum of 50% +1 as long as you wish to retain control. Honestly...unless you are seriously in need of cash for a different project you are better off just waiting and holding onto those shares. Unless you are playing some kind of inside/outside game.