Could have it been that he meant that the engine noise wasn't drowned out by wind noise? I know in my car if I have my windows rolled down at high speed I cannot hear myself think much less hear engine sounds, but my car is also factory, race cars I donno.
Let me clarify, it depends on the real race car. It's to prevent glass from getting all over the driver in case of a crash. In Nascar, there is no glass in the side windows. However, Lemans racing cars have fully enclosed cockpits, so it's up to the type of racing involved.
For club racers, if track rules don't mandate windows down, then the drivers can choose. When Motor Trend tested the Z06 at Laguna Seca, the windows were up and the AC on.
From my experience the majority of club racers do not wear ear plugs.
Probably true, but it depends on how loud the cars are, or how fast the cars go if they are open cockpit cars like a Radical, Caterham, or any of the formula type cars. In these cases, most of the drivers will wear ear plugs. Almost all of the motorcyle racers use ear plugs.
Let me clarify, it depends on the real race car. It's to prevent glass from getting all over the driver in case of a crash. In Nascar, there is no glass in the side windows.
Not true. It has nothing to do with glass. NASCAR vehicles have no window glass because the roll cage fully encloses the door area and the only way in and out of the car is through the window hole. This is also true for many other forms of stock car and circle track racing other than NASCAR. A safety net is put in place of the window to keep the drivers arms in the car during an accident, and to prevent debris from going into the cockpit. A safety net is quick and simple to remove when the driver needs to get out. In the event of an accident a window would trap the driver in the car and keep safety crews out, which is obviously not what you want.
Cars which have doors that open and close can obviously retain their windows.
The original noise complained of must be tire noise. Drive 200 mph on the grass and it goes away completely. It gets louder under high Gs too.
In this case it's not unrealistic to hear it as a car drives by you... stand next to a freeway and that's all you'll hear. It does however sound like the cars in LFS are driving on concrete rather than black-top...