We have two safety recommendations for the contemplative and wintry season:
When transporting a Christmas tree on the vehicle roof, make sure that it is securely fastened. Simple clamping rubbers are not enough, as our test shows:
Video: The Christmas tree was fastened here only with elastic bands. These do not withstand the load.
The tree should be fastened better with tension belts (pay attention to the CE seal):
Video: Here the Christmas tree was fastened with neat tension straps and stays safely on the roof.