The disclosure relates to vehicles and door sills for vehicles. These agents are combined with modulating doses of cytidine deaminase inhibitors to increase selectivity. The carriage is free to move within a plurality of magnetic flux air gaps defined within a plurality of magnetic stator assemblies in response to a plurality of control signals having a magnitude and polarity. Further, the system can be dynamically reconfigured by adding or deleting new messages andor applications, without affecting the performance of the unchanged parts of the system.