That's what I was thinking, too, but 200-mile commute could be pushing it with a Bolt, which has no gasoline range extender like the Volt. If that commute is all or mostly highway (and not stop-and-go), then the efficiency will degrade, and it will degrade further in the Winter, and if you run the AC or Heat.
The Volt has a 53-mile stated, but I've been getting about 70 miles. That is with 35-45 mph driving on my daily commute, with mostly no AC (windows down). Temp ranges 40 F to 80 F.
When we had 90 F temps this Summer, I was cranking AC, and seeing ranges in the low 60s with that same commute, so still a 10% improvement of the EPA range of 53. I'm hoping to see similar with the Bolt, but time will tell. Similar to how the pre-2009 TDIs often exceeded their EPA ranges, too. Lots of posts from people achieving 50+ MPG on the highway.