I have determined that the only way that I can achieve over 230 miles on a single charge is to NEVER drive on the freeway, where I just can NOT keep from staying in the fast lane driving 75-80 w/the "flow" of traffic and driving even faster when need be.
The past week since I last topped off on 3/15/17, I've driven my Bolt only locally on "city" streets at no more than 50-55 mph on long straight aways w/o any quick start/stops and few passing events. I drove my BMW, MB and F250 on longer trips this past week.
Doing this the remaining estimated mid-range in my Bolt is currently 204 miles after having driving only 36 miles (with the total estimated range equaling 240 and averaging 4.5 m/kw for the few miles driven).
Interestingly, the estimated mid-range after the last recharge was 209 miles, so I've driven 36 miles while only using 5 of the previously estimated 209 miles of range driving just locally in L and with the AC/heater off.
So, in order the make the "best" use of the Bolt, I am ONLY going to drive it locally from now on and anytime I need to drive on the freeway, I'm just going to drive one of my other vehicles instead.
The amount of times that I need to drive on the freeway to run errands, go shopping or whatever is actually quite rare; only once or twice a week at most and sometimes not at all. So, it's really not that big a deal.
Driving the Bolt only locally will allow me to drive it for weeks on end w/o needing a charge and may well increase my range above 250 miles between recharges. Going to drive it this way down to around 50 estimated miles remaining to see how much mileage I get.
We'll see . . .
Update 3/24/17: Took the long way around on city streets today. Mileage mid-range at end of the trip was 199 w/51 miles traveled. So, total effective range adjusted up to 250 from 240 yesterday.
Update 3/25/17: Only drove a few miles yesterday and ending numbers for estimate mid-range 180 and miles drive 70; total 250. So, it was a push on mileage yesterday. Think that was because I pushed the car over 55 on a long straightway trying to get around some slow pokes.
My electrician just installed the 14-50 outlet for my L2 Clipper Creek charger today and I've got it on the charger now. So, I'm going have to re-start my effort to see how many miles I can get out of the Bolt by staying off the freeway.
Going to have to restart monitoring the mileage after