Very nice data on the Bolt.
My interest is economical. I have an off grid homestead. I presently have my solar system sized for specific loads and needs. My objective is to keep the KWH as low as possible in the EV so that I will be able to Level 1 charge the car off of my power system without breaking stuff or having to add a lot more to capacity to my home power build. I am mentally preparing myself for the possibility I may need to put up one more string of PV panels to offset the increased load of the EV. However that cost is pretty substantial so efficiency pays.
When you have to carry your own water you start to value every drop! If I can keep the amount I use in the car as minimal as possible I think it should be possible to trickle charge an EV and be able to top it off on what I produce. But I am going to have to be pretty efficient with it's use.
It is probably excessive to want to mod the EV, but if I can be as efficient as possible I may be able to defer the other costs that I will have to spend in other places. And besides all of that this is a fun exercise.
Today with the EV's that are out there I think we can start edging closer to the XL1's numbers if we put some effort into it. The Model 3 with a .23 CD has some room to improve, but it is a pretty good place to start.