Why, it's one of them new-fangled wheels with demountable rims, so easy to change a flat tire, just undo a few little bolts, slide off the flat, put on the spare, remount the rim and Bob's your uncle, you're back on your journey! It's a miracle I tells ya!
![Cheesy :D](https://www.autopuzzles.com/forum/Smileys/default/cheesy.gif)
Or maybe something else....