Using lighter weight materials means that we can cut the size of battery packs to maintain the same range, which also reduces overall vehicle weight.

Using lighter weight materials means that we can make EVs larger (for those who need the room) by simply making them longer and maintaining roughly the same aerodynamics. And we won’t add considerably to the overall vehicle weight.

Good aerodynamics are critical for best highway mileage/range, but it also takes energy to move matter.

The acceleration performance of the car will double at low speed (aka city) driving (same motor torque for half the vehicle weight). At higher speeds the resistance of the air is a continuous factor so the difference will be less noticeable.

Energy consumption at low speeds and city driving will also be much better because the braking regeneration efficiency will rise significantly (if we assume the same battery pack for the GP and steel EV) since the battery will have to take up half the Amps. (todays EV batteries usually cannot take up the full braking energy because it would damage the battery so their regeneration efficiency is much less than 100%). At high speeds, the work will be against wind resistance so the gain will be less compared to a steel EV.

Now we only need a scalable process to create this material in HUGE quantites and at similar prices than steel so that the electric car revolution can begin in earnest.