Future wireless networks are expected to provide high bandwidth multimedia services in extended areas with homogeneous quality of service levels. Conventional cellular architectures might not be able to satisfy these requirements due to the effect of surrounding obstacles and the signal attenuation with distance, in particular under non-line-of-sight propagation conditions. Recent studies have investigated the potential of multihop cellular networks (MCNs) to overcome the traditional cellular architecture limitations through the integration of cellular and ad hoc networking technologies. However, these studies are generally analytical or simulation-based. On the other hand, this article reports the first experimental field tests, which validate and quantify the benefits MCNs using mobile relays can provide over traditional cellular systems.