Are These The Ultimate Roll-Flat Tyres?
I found this via Gwadzilla - an ingenious way to prevent punctures:
Fill them with 2.5lbs of marijuana
Yep. I reckon that’d prevent a puncture from slowing you down too much. Though there’d be other problems - the extra weight would be OK on the flat, but on a hilly / twisty ride? And getting any sort of decent tyre pressure to improve the smoothness of the ride would be pretty much impossible.
So maybe I chould stick to regular high pressure tyres instead.