It's pretty much the perfect location, the car usually charges faster than you can wolf down your Big Mac and fries.

The big super market chains are the other big player, they're taking customers from (overpriced) gas stations. It's usually a 5-10 minute detour to get to the local mega-mart and they have cafes and restaurants in there anyway - without the gas station markup.

Once the charging station's own battery is depleted - if all four stalls are in use, they will each deliver 87kW.

That is laughably bad.

And with good reason, there aren't many power grids particularly along long roads where you can simply plug in more than half a megawatt of consistent (!) load and everything continues to work as-is.

The sorry state of many power grids is keeping actually smart load management, EV, solar/wind/other renewable power generation and wildfire safety back so hard it hurts.

5 years ago, most rural lines were supporting homes and businesses with 200amp panels (and oversubscribed, since not everyone pulls all those amps at the same time). Complaining the grid isn't ready is like putting a gas power plant in the middle of no-where, and complaining that the only nearby gas main between two towns is too small to run the 700MW power plant.

Tesla can work around this by larger battery banks, or solar arrays to help recharge the battery bank faster. (they own companies that produce both). And in spots where they often can't keep up with demand, work with the power companies to get more power delivered.