Was cruising to a meetup, got stuck in traffic. looked down to see the needle darn near touching red. Pulled off the highway and let it cool off. Managed to get to the meetup and back without her getting hot again. I did notice that my fan was not spinning when I pulled off, so I'm wondering where I should start diagnosing that. I cannot say I ever checked the fan to see if it worked, but I'm assuming it did as I have been through several trackdays and never overheated it. Wondering if there is a common failure mode for the cooling. I.e. bad temp sensor, bad ground, burnt connector. I haven't touched it yet, so all options are open.