Same noise here too.

 

The car is always thinking about perfection do not provoke it! Any further inquiries on this matter will lead to assimilation.

 

So I guess the park brake sound is normal and every GT4/Spyder is doing the same thing? I was a bit worried about it but apparently there are more cars doing this weird thing with the parking brake.

 

You can get the sound if you get open the door and close it after its been siting for some time. Some electronics come out of sleep mode and wake up.
Various solenoids operate and make click sounds.

 

This. There are a ton of computers and hard drives that fire up in preparation for ignition on. My 2011 BMW will continue to make noises (soft clicks, whirs, etc) for up to 20 min after I park unless I lock it. I imagine it’s something related?