2004 Silver Thunderbird Strange noise at speeds 70 mph and above

[cndspin]

When driving at 70 or above a strange noise that sounds like a bad/broken speaker cone turns up. At first I thought that's what it was; but then the noise appeared even when the radio was not even on. It is intermittent; but shows up almost every time at those higher speeds. Any ideas as to what that might be appreciated. Thanks.

 

[JohnS]

If the hard top is on, it can make a lot of strange noises at high speeds or going over bumps.

 

[Bond007]

Are you seeing any flashing red lights behind you?

 

[OhioTbird]

Are you seeing any flashing red lights behind you?

If that happens you go even faster?