I know my first unedited version of that post wrongly mentioned a 9 speed gearbox, and although that sounds like a tad too many gears to play with on the road, after some discussion with other folks, I also wouldn't discount the possibility of McLaren doing something extraordinary and revolutionary with the transmission to make something like that possible. They are, after all, all about pushing the boundaries of what is possible in a road supercar.
I think what we're seeing here is what I'd like to call The F1 Effect. Back in 1992, the F1 pretty much blew everyone's minds in terms of what was possible in a road car, and it reset the rules and goalposts of supercar design and engineering by such a huge margin that it was nearly unbelievable. And history has a habit of repeating itself..
“To do something well is so worthwhile that to die trying to do it better cannot be foolhardy. It would be a waste of life to do nothing with one's ability, for I feel that life is measured in achievement, not in years alone.” - Bruce McLaren