I'd expect substantially different charging infrastructure, not just a different pedestal arrangement, for a Megacharger. Wouldn't a semi parked there have the trailer blocking a substantial portion of the lot or even the chargers on the other side? Or am I not understanding the layout. The megachargers will certainly be in larger lots that are intended for trucks to sit and park for a period, or more realistically, at the hubs where they're being loaded to minimize downtime.
Would be cool to have a standard stall that's arranged for someone towing, though.