A fuel cell system including a fuel cell stack, a reformer system, and a waste energy recovery assembly is presented. Accordingly, it is too much of a burden to the braking system of a towing vehicle to not have brakes on the towed vehicle. The offers comprise a list of saleable units with their CPM values available for purchase from the sell-side platform, and for facilitating the transmission of bookings from the buy-side platform to the sell-side platform via the buy-side interface to the sell-side interface, wherein the bookings comprise a confirmation of at least one of the list of offered sale units.