Maybe, but underground wires avoids problems caused by storms or people driving into structures.

People driving into structures is already a solved issue in any covered parking, solar or not. We know how to build structures on steel poles that does not fall apart when people accidentally hit them with their car. You can even add steel bumpers around the poles like in any covered parking lot.

Make the wires run through newly created speed bumps. It's a parking lot, and limiting speed should secure the panels even more.