so i asked this question on the original c30 forum ( not sure what happened to it but c30world is gone) but its happened twice and its more likely its the battery but i got a duralast battery about a year ago, and well if i'm parked or in gear the lights on the inside will some what flicker. and it will completely turn off while the key is in the 3rd stage. and will turn on a second later as if nothing happened. the first time this happened i was at a red light revving in neutral hit 3000 rpm and everything shut off. i mean it hasn't done this in a while but i wanted to figure out from y'all what you think.

 

I have experienced this once or twice also