Doing a little terrorism?

so, and please forgive me because i have forgotten all but the two important details of this story and that really bugs me, one of my favorite artists went up and down the (i think spanish) riviera and put giant oversized beach umbrellas like every 50 feet for maybe 5 miles? it looked absolutely gorgeous. he just spiked them into the sand.

a few days went by and then the wind really picked up. and those umbrellas just went rolling down the beach. not as huge of a problem as you'd think, until you wonder about those spiky ends. I don't remember if anyone was hurt and i hope no one or thing was.

i've always been inspired by the story though. wanted to do some grand gesture of art that resulted in accidental (and it's very important that it's accidental) very very mild environmental ecoterrorism or something like that. you never want to hurt anyone

one specific company's cars do not use lidar, and can thus be confused by salt

EDIT: oops I thought it was reading the salt as a physical obstacle, but no, it reads it as a road marking. oops.