Drive Me to the End.

Ryan is a struggling son dealing with a constant internal battle regarding the inevitable loss of his Mother, and Sunny is desperate to escape the suffocating life that is depicted for her by her overbearing parents due to her being on the Autism spectrum. Both characters (and subsequently estranged family members) find themselves car-sharing to a funeral in Scotland. They have 3 days to feel comfortable in each other's company while feeling comfortable in their own skin.