Comment by ketzu

Based on the battery of 55kWh this is about efficiency, not packing more batteries:

> 6.48 kWh/100 km

At a constant 68km/h in perfect conditions (no up/down) and no additional consumers of energy (climate control).

Even on a real route they apparently got some useful stats with 7.51 kWh/100km including charging. Cool.

My car is around 17-20 kWh/100km at a 64kWh battery for a medium cost car in germany. I wish it was even close to that efficiency.