Gauss:

That's more than 8 times as loud as a vacuum cleaner (70 dB).

Yeah, I wouldn't recommend driving the 4RS without a helmet or ear protection.  But I'm also pretty sure that my vacuum cleaner is Much louder than 70dB...
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22 GT3 Manual, 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 18 GT3 Manual, 16 Cayman GT4, 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi