Not the Mustang you used to know: We test Ford's Mustang Mach-E EV https://www.thisismoney.co.uk/money/cars/article-9152587/Not-Mustang-used-know-drive-Fords-Mustang-Mach-E-EV.html?ito=native_share_article-masthead
This reminded me of the Ford Puma which has a "Megabox" which can be hosed through if dirt has accumulated in the trunk. It has a removable plug though!