Flat-proofing a bike

[Dogtrousers]

My dad used tell me the story (myth), from when he was riding before the war, when a puncture had happened and no spare tubes left, they packed the tyre with grass to get home.

Years ago, a friend of mine and I tried this. We happened to have a huge pile of freshly cut grass and a whole afternoon with nothing better to do..

We failed to make it work despite devoting over a great deal of time to it.