Don't most people plug it in at home regardless of what battery is left? no one wants to leave the house on 40% battery just to run it down a "cycle". How does that effect the math?
It depends on the each battery chemistry but most lithium based batteries that would count as like .6 of a cycle or less. Those 1000 cycles are usually determined by full discharge and recharge which is the most demanding on the battery. Usually in the data sheet for batteries you can see cycles for full discharges and partial discharges.
Range anxiety decreases with ownership. Once you adapt to a 300 mile range you figure out what your daily usage is, and typically it's a small fraction of the range. After all who drives 5 hours per day on average? So it's not a big deal to let you car go a few days, even 40% is 120 miles, or 2 ish hours for most driving patterns.
Additionally charge cycles generally means full charges, so 1000 full charges = 10,000 charge of 10%. Similar rules apply to any similar battery technology, like in an apple laptop or pretty much any cell phone.
