It is safer to zig zag in a Beemer compared to other cars.
During the holiday season, if you have to go back to hometown with the balik kampung crowd, you will find yourself stuck in traffic going at 90 km/h in all three lanes on the highway. It can be very frustrating following these leisurely driven cars. No point flashing or honking because most of these people don't care and you will feel like a bully.
The best way to overtake these people is to zig zag but you do it with consideration. Use the turn signals to convey your intention and change lanes slowly. Do it well and nobody will flash or honk at you.