If the cars meet the required decibel level then someone just needs to tell the aulde baig to pull her head in.
If they continue to handle her with kid gloves she will continue to complain. Make her life as miserable as she appears to be.
Or play the guilt card. Do you want these people to go out and run their cars on the street because they have nowhere else to do it. It could be your kids that get hurt as a result.
I live next door to Amberley air base. Every month or so i give them a call and boy, you should hear them cringe on the phone until they realise that i am not whinging about the noise. I actually demand more fly overs over my roof. !!!POWAAAAAHHHHHH BABY!!! They get a kick outta that and i cant be sure but It seems like they give my place an extra buzz or 2. Luvit.