[jakehop]

"This incredible range will be achieved through efficency improvements rather than just a bigger battery pack."

What an interesting statement! "Bigger" – compared to what? A Tesla Model 3 Long Range AWD? That can do around 296 miles (EPA/Highway) – so the Mercedes-Benz will need to be 2,5x as efficient.

The drag coefficient is one area that could be improved. C(d) for the Model 3 is 0.23, which is pretty good for a production car. Lower than that and you are in experimental territory – which is probably how this project might end up for Mercedes-Benz.

Not bad, because these types of projects usually teach us something new. But not good, since this will be another "promise" broken, due to this inflationary PR-approach.

[Gravityloss]

Rear wheel covers? The Lightyear One has 725 km of range and is quite optimized, using only 8.3 kWh/100 km. Mercedes' 1200 km seems like a lot!

https://lightyear.one/

[jakehop]

Interesting (albeit expensive). I usually take any specs provided by the manufacturer with a grain of salt – including the idea, that you can get 1,2kW/hr of energy from the (static and encased!) solar panels on the roof alone! That seems quite far fetched, to say the least.