In the movie Safety Not Guaranteed, Kenneth's ad was (emphasis mine):
"Wanted: Somebody to go back in time with me. This is not a joke. You'll get paid after we get back. Must bring your own weapons. I have only done this once before. Safety not guaranteed."
Was there any indication or hint in the movie that Kenneth was able to time-travel (before he meets Darius and her colleagues)?
Is there any indication or hint in the movie that it was indeed a time-traveling Kenneth who crashed his car into Belinda's then-boyfriend's house (proving Kenneth's claim that if Belinda is alive, then his time traveling worked)?
What about any other hint that Kenneth was able to time-travel (in his attempt with Darius)?