Going on a multi-QC journey is more like this: You get up to the maximum range for your driving style on your (presumably 100%, then cooled back to ambient) initial charge, and then you get 40+ miles for each successive 80% charge, because a) it would take twice (or more) times as long to stuff that last 20% into the battery, and b), trying to cram that last 20% into the battery seems to heat it way worse, too. I've done about half-a-dozen trips from Portland to the Puget Sound area, using from six to eight QCs in each direction, and find that I pick up roughly one temperature bar every three 20%-to-80%-ish QCs. Battery heating is indeed a limiting factor, but only barely more so than the sheer amount of time it takes to travel at an average of 30MPH. Of course, these sorts of trips work best in non-summer months when I can set out at only four or five battery temperature bars.