It is possible to make the seat rotatable for the driver and passenger on the Fun2Go or FunTrain. This option makes it easier to get on the bicycle. The seat of driver rotates to the left and the seat of the passenger rotates to the right.
This option is not possible on the other bikes.
Read more about the rotatable seat in the article: 'Rotatable seat on the Van Raam Fun2Go side-by-side tandem'