Martha seems to try and jump out of the moving car because she knows where Emmy is or how she is doing and is afraid of facing June. Demon also seems like he’s ready to make a change and leave Dori, but when she tells him she’s pregnant, leaving her seems impossible. This shows how getting sober isn’t just a single decision that Demon can make on his own: it’s a decision he’ll have to make over and over again as his life moves in different directions.