A bit more technical and anecdotal information on my bike's (Crosscurrent S with base battery) range/performance, since others expressed interested:
The bike has 5 boost levels (as well as a throttle):
S: I've barely used this, but it's the highest boost level. I think it peaks at 750W, similar to boost level 3, but ramps up the boost much more quickly.
3: Peak assist is 750W. I tend to use this when I'm riding in/with traffic on busy streets, to maintain 26-30 mph and accelerate quickly.
2: Peak assist is around 550W. I've been using this on lower traffic streets, or when I'm feeling lazier in a bike lane.
1: Peak assist is about 375W. Trying to use this setting as a default when I'm not sharing the road with cars, or on 25-mph residential streets.
ECO: Peak assist is about 250W. Basically using on walkways, shared bike paths, parking lots.
Battery is nominally 48V / 12.8 Ah.
I took it for a 24-mile ride today, which included some significant hills, some fast flat sections in traffic, a slow meander up a beach boardwalk, and some relaxed residential streets. I did about 1/3 of the ride on Level 3 boost, 1/2 on Level 1 (typical speed 22-25 mph, not counting hills), and the remainder on ECO by the beach. I do often engage the throttle when starting from a standstill at lights/stop signs, as well.
Initial voltage was between 55 and 56V. Final voltage was 48.8. Battery meter had emptied 3 of 9 ticks, meaning the indicator thinks that I had around 2/3 of the battery left. I'm not sure if I believe that, but I am quite confident there was a lot of juice left, as the voltage was still above the nominal battery rating. I'd have no qualms about undertaking a 40 mile ride given that ride profile, but I'll have to take some longer rides before I can be too confident about how far to push it.