A shop on the other side of the state has been having similar issues except the neighbors of the track actually succeeded in getting them shut down, what the previous owner did was sell the business to someone else without telling them or something messed up like that. F-ed up but what the new owners ended up doing was run flashlights for awhile until they could get it into court to come up with a compromise (and sue the chit out of the previous owner I would imagine) and they are building a fence/wall to similar to what was mentioned above like the highway noise barriers. But it cost upwards of 10K I believe to have it done from what I heard.