Inter-vehicle communication is considered as a major problem to vehicular environment. Here, an analytical framework is developed to investigate the reliability of end-to-end information relay process along a platoon of vehicles. The reliability of inter-vehicle communication is measured by the probability of success for information to travel to a known destination and by the required number of hops. In the models, recursive formulations are derived for the two previous criteria. Lower and upper bounds for our models are provided and computed by dynamic programming techniques. Simulation results match very well the mathematical expressions and show that the gap between lower and upper bounds is very small.