||The Vlasov-Poisson system is a kinetic equation describing a large number of classical particles interacting by the Newtonian/Coulombian force. For small data solutions, Bardos and Degond obtained a long-time decay estimate for density functions in 1985, and then S. Choi and S. Kwon proved modified scattering. Very recently, this problem has been revisited by Ionescu, Pausader, Wang and Widmayer using dispersive PDE techniques motivated by the resonance analysis, and they provided an alternative approach. In this talk, we too revisit the problem but using a different toolbox, namely Strichartz estimates for almost free transport flow. This talk is based on joint work with Jin Woo Jang (Bonn) and Maja Taskovic (Emory).