This isn't about total time taken, but time parked. I'm thinking about contention. Let's think positive and assume BEV will be succeessful. Everyone who wants a BEV will have home charging. That leaves charging on long trips. But let's also be a little conservative and that business leaves OTR charging to Superchargers. Imagine a simplified general scenario for a future long-range BEV: - Range is 200 in ideal conditions, 120 in bad conditions. - Home charging is up to 1/6 of range per hour (including visits to relatives and friends with chargers, which will beomce more common; maybe there'll be guest chargers like people now have guest rooms). - Supercharging is fairly ubiquitous, enough that I can charge along on my normal routes. - Supercharging is 0% to 80% in 30 minutes, 80% to 100% in 30 minutes. - No destination chargers at businesses. How much time would you spend parked at Superchargers each year? How does that compare to time parked at gas pumps in a conventional car that you'd drive? How much on-the-road (OTR) charging would our car(s) need each year? Maybe 2 1/2 hours, unless the car makes us want to drive more. - 10 to 20 minutes on 3 trips to the Bar Harbor area, depending on the location of Superchargers. - Supercharging back up to 80% on 2 trips to NH. - Maybe a 20 minute charge on a trip down to Portland. Now I think about how long we'd spend occupying fuel pumps. I've never timed it, but If a 3 minute stop (including all additional time messing around with payment) at a gas pump got me 500 miles (in my Prius), then for 15,000 miles per year, I'd have 30 stops, parking for 1 1/2 hours per year in total. That's really not a huge difference. So maybe BEV contention will turn out to be an issue of handling extreme peaks. Maybe that's where Superswappers will have their niche, and the installation of pop-up Superswappers will be a sign that Thanksgiving is coming. In reality I think that high BEV ownership would lead to high amounts of chargers at hotels and special large-cachement destinations. I also think that luxury car drivers and people who do more long trips would opt for larger batteries. Both of those could reduce contention at OTR chargers.