1) It seems like, given a non-lead foot, the most power would be required at getting going and accelerating when already at a high speed. I wonder why they didn't do like GM did later with the Volt and, as I understand it, have it in EV-only mode as a rule, except only when extra oomph is needed, or when the battery is running low.
3) The no cruise below a certain speed thing might not be so much that CC shouldn't be used below a certain speed, as it shouldn't be used on the kinds of roads where you drive below a certain speed. I.e. we probably want no auto-pilot on residential streets, having driveways people can back out of, and kids that could suddenly run across. It's probably really only sufficiently safe outside of (busy) cities.
And the complete cancelling means you deliberately have to set the speed you want to use, when traffic conditions might've changed since the last number you picked.
4) Ah, so the Prius needs a "Stuck mode"!
7) I'm trying to imagine how roadside assistance organizations would support these vehicles. I guess be able to provide/sell you a spare battery for the trunk for booting/running the computer, then a gallon or two of gas for E1, and then a high voltage battery onboard the tow truck to spin M1.