Two times in the last 5 years..
First time on a trip to the river Elbe. My car is a 2005/ 2006 model so tube type rims. I called the automobil club to change the wheels.
Second time 30 minutes after leaving the garage wich changed all 4 contis with ttrack´s and -of course- new tubes.
And of course it happens on a sunday 10 Minutes after the garage closed for weekend

As Paul wrote: Spare wheel = essential item especially for tube rims!