Although released after Need for Speed (2014), it was shot beforehand. Aaron Paul was so impressed by Imogen Poots in this film, that he encouraged her to apply for the female lead there.
When Jess and J.J. go to the spot where Jennifer (Jess' sister) disappeared, there is a place called White Rabbit in the background. The White Rabbit is from Alice's Adventures in Wonderland, where a girl disappears down a hole.
After About a Boy (2002), this is the second movie, based on a Nick Hornby novel, featuring Toni Collette as someone who tries to commit suicide.