"Oh Shit" moments...

So my first accident on bike happend hour ago.

....

At first he was trying to be polite and nice, but after I asked him if I could write down his plate he stood in front of it and kept asking what I want it for.

In a meantime when I was on the phone with my brother, he got in his car and drove away.

The driver is legally obliged to provide insurance details (as well as their name and address, if I'm not mistaken). Write down as much as you can remember right now because it will get more and more hazy over time.

If you want to pursue it, it's worth waiting to be seen at accident & ermegency in a hospital or by a doctor and get them to detail any injuries you've sustained.

See the "What to do in the event of an accident" thread. It has all this and much, much more.