The eight nominees' first challenge is the annual riding the rails challenge, which has each rail the width of a tire and the two rails exactly the width of the vehicle's right and left set of tires apart. Adding a sense of fear, the rails are set over a shallow pond. The nominees have the option of reversing over the rails - the vehicle properly lined up for them if they choose to do so - or driving forward over the rails, in which case they have to align the vehicle themselves.