My experience exactly! Last
My experience exactly! Last year my 2008 had a battery vomit. Many of my dash lights were lit. My battery blower near the passenger-rear seat was at full speed. My cruise control was disabled. My ICE was running louder than usual, but I could still travel at my usual high speeds without nasty high rpms. I ran it like that for about a week. It got progressively worse. Until at the end when the ICE was revving really high without much acceleration. The car failed to move twice while driving 20 miles home. I had to pull over and "reboot" the car. Luckily I made it home, but after that it was dead, wouldn't move at all. The ICE would rev, but no movement.
Turned out I had 1 little battery block fail out of the 28. I had it replaced with a refurbed block and all was good to go so far for over a year. So for me "limp mode" lasted around 150-180 miles.