Frankly I'd be one of the ones blocking the roadway. Until those numbers change to 75: do the speed limit.
The only way I justify speeding 75,80; is for an emergency situation. Interpret that how you will but I don't speed just to get downtown for a party

And some of you that are against these people doing what they're doing: They are doing the speedlimit, anyone behid them who spins out, slams a wall, clips other cars, while trying to get ahead of them, is their own fault. It's not obstruction if they are travelling the speed limit. Which does lead to my next concern, though.
I'll bend a bit and say I feel it was incredibly stupid to block off the fast lane. Ambulances? Someone bleeding perfusely in their car needing medical attention? That happens every day.
So, aside from the fast lane, I'd be setting the traffic back too. Which would null the point of it anyways.