I just realized on my Pontiac G6 GT 3.5L car tonight that I had a M1-M4.... I'm not sure if this goes to M5 when I get enough speed because I though it only went to M2 until I shifted to M2 tonight while driving, M3 and M4 appeared. Anyway, What is this whole thing about? is this really a "Manual/slapstick" option? I had never seen this before except in a VW Golf City I rented once, which I really loved about the car and I used it all the time.