Just to add another experience to the database, I got the same dashboard message as did Randy ("Stop Safely Now"). I pulled over, turned off the ignition, turned it back on, and the hybrid drive worked while the same message was displayed on the dash. I only moved the car a few more feet off the highway and then shut it down until the highway patrol stopped by to help.

I am also with Randy on the gross inaccuracy of the MTE display and the fuel gauge, but in truth the error was not making sure the previous tank was topped off. I must have been a half gallon short, because I had gone 461 miles @ 32 MPG (should get to 480 with a full tank).

If there's any engine damage I'll report it in a follow up post.

...or passengers swim
(It's an airline thing; in this group I guess it should be "Motors turn," but there's no such thing as MTOPS)