title: Reply to Lopez et al.: Sustainable implementation of taxi sharing requires understanding systemic effects.
authors.affiliation: Senseable City Laboratory, Department of Urban Studies and Planning, Massachusetts Institute of Technology, Cambridge, MA 02139; Istituto di Informatica e Telematica del Consiglio Nazionale delle Ricerche, 56124 Pisa, Italy; and.
authors.forename: Paolo
authors.initials: P
authors.lastname: Santi
authors.affiliation: Istituto di Informatica e Telematica del Consiglio Nazionale delle Ricerche, 56124 Pisa, Italy; and.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Resta
authors.affiliation: Senseable City Laboratory, Department of Urban Studies and Planning, Massachusetts Institute of Technology, Cambridge, MA 02139; mszell@mit.edu.
authors.forename: Michael
authors.identifier: http://orcid.org/0000-0003-3022-2483
authors.initials: M
authors.lastname: Szell
authors.affiliation: Senseable City Laboratory, Department of Urban Studies and Planning, Massachusetts Institute of Technology, Cambridge, MA 02139;
authors.forename: Stanislav
authors.initials: S
authors.lastname: Sobolevsky
authors.affiliation: Department of Mathematics, Cornell University, Ithaca, NY 14853.
authors.forename: Steven H
authors.initials: SH
authors.lastname: Strogatz
authors.affiliation: Senseable City Laboratory, Department of Urban Studies and Planning, Massachusetts Institute of Technology, Cambridge, MA 02139;
authors.forename: Carlo
authors.initials: C
authors.lastname: Ratti