It is what it is. We cycled through forests and over heathland on a grey day. Warmer, but also rain now and then. Three times I had a flat tire, three times we were able to fill it up super fast. Farmers apparently have a device with air, just like a bicycle repairman. I didn't know that.
There is something wrong with my valve. It seems that sometimes it does not close properly. But I was still able to drive 30 kilometers with it. Funny thing is that it was empty after our coffee breaks.

Fingers crossed that the tire turns out to be full tomorrow morning.