I'm not sure what's going on - perhaps someone can explain it to me. Example: I've charged my 60D up to 90% which shows, say, 193 rated miles on the dash. This is based on something like 285 Wh/mi according to the energy plot in the center display. I drive 50 miles where my total Wh/mi is lower than the rated range (say 260 Wh/mi) for those 50 miles. After the 50 mile drive, the range displays something like 133 miles which is 60 rated miles lower. I drove more conservatively than how the rated miles are calculated but used up more rated miles than actual miles driven! What's up with that?