Was it thursday or friday? I think it was thursday.
Woke up, got in the car. Drove for a some 200 meters to dicover a strange sound coming from the front right of the car. It was a flat tyre. Drove to the closest gas station, pumped it in. Drove to the office. Replaced the tyre with a help from a collegue. It's my first time anyway. Later in the day I went to a car repair shop, where the company has an account. They replaced the broken (because of the driving on it) flat spare tyre with a new one.
They said the flat tyre was fatally broken because of me driving on it and showed me the damage.
The outcome of it - never drive on a flat tyre, even for a 100 meters :)