I participated in an Earth Day event this past Spring.
The EVs were parked on a grassy section in a large park. As we arrived one of the event volunteers directed us to our parking spots, and as we exited the vehicles, instructed us that local regulations and Event Rules required we place the large cardboard square she was handing out under the vehicle to protect the grass from motor oil. My incredulous look did not overturn their rules. Using one-eyed-thumb-aiming techniques I made an estimate of the most likely offending oil drip location, and flung the cardboard under the EV.
I completed the setup job by mounting the "No Gas, No Oil, No Tailpipe" sign.