The demo was quite fun, and I look forward to playing the full version! ^_^ Two things I noticed:
In the first decision screen, the choice "Run into the road myself to push her out of the way" leads to an error that says push_marianne is not defined.
Also, I think the lack of pauses when Trevor interrupts Dion is a nice touch, but it's difficult to catch what Dion is saying at times with how quickly his line disappears. Is it possible for Dion's line to stay a little longer before Trevor cuts him off?