I was at dinner (outside because of Covid). The restaurant had a unique barrier to protect the dining tent. It is a portable vehicle barrier from Pitagone and distributed by ARX Perimeters. It is a product from Belgium and appears to be bad ass.There is no anchoring involved. An intruding vehicle hits the barrier, rotating it, which then lifts and immobilizes the front of the vehicle.
It may be a solution for specific situations where moveable vehicle barriers are necessary.
Photograph from Zimmer Consultants, video from Pitagone Threat Management.