Yes. One of the usual YT channels had this interesting picture. Gas mileage is miles per gallon. Or in this case, do it the European way: l/100km. The unit of that is an area. Typically a rather small one, ca 0.1mm^2.

That's the area of a trench you have to dig along your path if you want to supply your car from the trench instead of your gas tank.

When charging, the Tesla shows you a little miles per hour figure (how many miles of range you gain per hour of charging) and it can often reach 1000 or so on the super chargers I use frequently. It’s fun to calculate the miles per hour of gas (around 12,000).

This is true. Though the electric batteries do have the advantage of having already paid the "thermodynamics tax". Some of the energy in gas will go towards heat losses; energy that cannot be converted to movement.