Drill the hole-no one is ever going to see it. Best bet is to install a panel-mount USB PD device like this (https://www.amazon.com/12V-USB-Outlet-Charger-Socket/dp/B09SKXX1J9 ) in the panel right next to the existing USB connectors, and power it from the back of the cigarette lighter. Did that just after I got my 2018, and it’s been beautiful. Just have to be careful about precisely locating the mounting hole.