OK, so unfortunately I wasn't able to go on Sunday as I planned, since my daughter was sick. When we went on Monday (yesterday) the car I wanted to buy in Auburn was SOLD.....and I didn't find out until I got to Auburn. So I drove further down to Roseville and got another Spark EV. We left at about 4:00 from Roseville. She did the driving in the Spark and I drove behind her in our 2007 Odyssey Minivan.
We drove from Roseville (elevation 160') with a full battery and drove to Colfax (elevation 2500'). Stayed in the right lane and kept it at 55. It was about 35 miles or so.....and we got to Colfax with 40% left on the battery! I was quite impressed. From there we went to Cisco Grove (5500', 31 miles) with no problem, same driving conditions. We charged for about 1.5 hours at the Chevron and proceeded to Truckee (5800', about 20 miles) - no problems. We filled up there - took about 17 minutes, and drove home. It was about 35-40 miles to our house in Reno (4500'), and she had almost a full battery when we got home - at 9:00.
Ultimately, the drive was no problem. What we really need is another DCFC charger in Cisco Grove. That was the longest wait - I took my wife and kids, left the car, we ate in truckee, then came back to get the car later. I think a DCFC charger in Cisco Grove would make all the difference. Suddenly, charging up takes 60 minutes from Sac to Reno. IF you made the charging stations free, too, that'd be even better. Or cheaper. Oh well.
I will say that conditions were quite ideal (70 degrees, no climate control, no stereo). There was a bit of rain near the summit, but we arrived after it rained.
But yes, the trip was not a problem! very easy to do and I might say that going the other way (Reno to Sac) would be very easy - might need to stop in Truckee, and might even be able to go directly to Roseville from there.....but only one way to find out!