Best bet is for him to sell the property and track to the developers for double the money it's worthn and find another piece of property far out and away for something that might not be developed for another fifty or seventy-five years. If he explains or gets some smarter lawyers to explain that it will be cheaper for the home developers to buy the track and property now than to put up a future fight with the noise and smell of racing and walls and traffic and etc., It happens all the time where it's less costly to buy someone out than to fight for decades about issues that will negatively impact you selling homes. Sell it for what it's worth and plus whatever you need to build an improved facility SOMEWHERE ELSE. It will save both of you time and money fighting for decades to come. He's going to lose anyway in the future.