You can go fast or you can go far, but you can't do both

[AZFox]

The blocky shape of the Truck signals that it's designed for day-to-day local driving. It's not particularly suitable for highway road trips.

I'll be amazed If the Truck's range at 75mph versus 45mph is reduced by anything less than 30%.

The blocky shape doesn't matter much at low speeds. At highway speeds aerodynamics matter much more. The reason is because Aerodynamic drag increases by the square of velocity.

For example, speeding up by 67% from 45 mph to 75 mph creates 178% more drag. In other words, 75 mph drag is 2.8 times 45 mph drag.

Tisha Johnson's design team deliberately chose to give the Truck the form of a familiar and timeless small pickup truck rather than going for optimal aerodynamics. I consider this an excellent design decision.

"You can go fast or you can go far, but you can't do both" is the tagline of this article that tested an EV and found that going 80mph vs 70mph caused a 26% range penalty. There's also an accompanying video.


See also Road & Track: How Does Speed Affect EV Range?

This is another post where I'm observing, not criticizing. The Truck's range won't be 150 or 240 miles on a freeway road trip like I originally assumed. Realistic expectations create happy customers.

 

[KevinRS]

We don't know the highway or city range yet. It is possible that the estimates of combined range shown are conservative. If the designers at Slate are smart, and they seem to be, they undersold on lots of things, to give themselves some margin for changes. We will all just have to decide based on the real numbers when they come out.
For me, the longest trip I foresee as about 120 miles, which according to one of the EV trip planning sites, would require a 5 minute charge session somewhere in the middle with 5% degradation. I'd have no problem just timing the trip to take 30 minutes to eat a meal in the middle, so the trip should be easily doable, even if range is reduced more than expected at highway speeds.