I will try to make this short, since I am tired. But, as I was coming home this evening, i decided to exceed the speed limit by about 35 mph on a long straight-away (in a 30 mph resid. zone), and i get to about 60-62 mph, and i hear... EEEEEEEEEEEEEE!. It is a constant noise, and isn't the sound of my formerly squeaky springs, much louder, and constant until below 60 mph. I let off the gas, and coast, and the noise fades out. I have never heard this until today, and luckily I never travel on the interstate. I don't know if this will get worse, where its coming from, how it will affect my future driving. I am scared.

Does anyone have the slightest clue what this might possibly be?
Thanks,
Ty