Greetings, Dennis. What part of Sweden? I spent some time in Gotheburg. Very nice area.
Some suggestions:
You will first need to find a place to host Cars & Coffee. Maybe plan to start small and grow larger. A car dealership may offer to host the group. It allows car enthusiast to see their new cars. Need to determine who will supply or sell coffee. You may want to have some police presence at the entrance and exit to deter drivers from getting out of control trying to show off for the crowd. Encourage people not to try to video people leaving…it just encourages drivers to show off more. Then find a way to get the word out. Have fun!