Compared to other applications, road traffic currently requires the most energy. Freight and private transportation account for the highest consumption. There are also off-road applications. A key factor is cost-effectiveness: synthetic fuels are currently still significantly more expensive than fossil alternatives, which makes their broad market ramp-up more difficult. Added to this is the need for infrastructure - from filling station networks and logistics structures to nationwide availability. At the same time, there is a high degree of technological diversity, as the car, truck and rail sectors each have different requirements for fuels and drive systems. A further bottleneck results from the competition for resources with other sectors, such as energy production. In addition, the ramp-up of production capacities has so far been slow, which may become an increasing problem, particularly for use in existing fleets. It is already clear that reFuels, alongside the electrification of transport, will have to contribute to the defossilization of this area of application.