MotorTrend just ran this track, same car, again, it's not a huge difference, but it did a 1:21.47.... we should probably update the time.
Porsche Cayman GT4 laptime at Willow Springs - Streets of Willow
|Track||Willow Springs - Streets of Willow|
|Vehicle||Porsche Cayman GT4 (981)|
|Power / weight||385 ps / 1340 kg|
|Average speed||110 kph (68 mph)|
|Submitted||25.08.2015 by anonymous|
Reference: Ignition Episode: 138 https://www.youtube.com/watch?v=0BFKU1Fj0j4