Ryala, nice to hear about the Bolt. It's a small car, so there's always a slight (and probably irrational) concern about how well it will protect you in a crash.
We have both. I thought I would like the Volt better. I was wrong. Pretty much everything about the Bolt is better, with the one exception that I prefer the lower seating position of the Volt.
As you mention, the Bolt seems to defy physics. It's shorter than the Volt, yet it has quite a bit more interior space. The range is pretty great and I think its version of showing you how much range you have left tends to be pretty accurate.
The downside versus the Volt you already own is cost. Even used Bolts just aren't that cheap and, when we did the math, it seemed to make more sense to lease one than to buy a used or new one. I was also concerned about depreciation if we bought a new one. While there aren't that many choices for EVs currently, at the end of a 3 year lease, there should be quite a few more options.
When we leased ours, I emailed every dealer within 500 miles that had one in stock. I told them I was going to lease the car, didn't need a test drive, and asked what their best price was. Once I got the lowest price, I went back to the others to give them an opportunity to beat it. Once I finally found the lowest price, I asked if they would be willing to deliver the car. In total, it took about two weeks and I got the car delivered to me for free from a dealer 3 hours away. Unless you're allergic to emails, it was pretty painless.