Why the lower electric range for Rex?

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nickthorley said:
Oh right so if the Rex was allowed to run the battery down then there would be no difference?
No, it is the additional weight that the REx carries around that accounts for the vast majority of the efficiency difference. You could think of it as carrying around a very heavy person all of the time. On an ICE, the often quoted effect is about 0.1mpg/100#, but translating that into an EV isn't quite straightforward but is real.
 
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