Another autostop question:

Whenever I'm at my destination and stop my HCH CVT, the autostop engages and the engine shuts off--but then the engine turns back on when I shift to park (without lifting my foot off the brake). Any idea why it does this?

I generally turn the key right off, so it doesn't use that much gas anyway, but it seems like kind of a waste--why doesn't the HCH just stay off if you're stopping for good?

If there's no good reason, is it bad for the car to shut it off in N or D, then shift to P?

(For that matter, I notice that the manual says nothing about using N while the car is in motion--does anyone here have a good sense of how much wear & tear it adds on the CVT to coast in neutral, then shift back to D, while driving? I know a lot of hypermilers recommend doing so, but given the comments I've seen elsewhere about CVTs needing replacement after 50-100K miles, I'm loath to stress mine more than necessary...)