I tested Insane mode this evening at the metered lights on I-280. Waited an extra amount of time to get a clear path in front of me. You know how when you go into to the ocean, and your muscles fight the surf's rhythm of pushing and pulling, towards shore and away from the shore; that even an hour later, on dry land, you still feel this phantom force? That's what I feel now, even after sitting down for 15 minutes. It's still there, tugging at my cheek muscles and my scalp. I still feel that acceleration... a little scary. Be forewarned.