On April 8, 2010, the MIT Energy Initiative (MITEI) sponsored a symposium on: The electrification of the transportation system: issues and opportunities. The symposium was organized into four panels that addressed key issues: (1) Why vehicle electrification matters, (2) vehicle technologies (3) infrastructure, and (4) policy options. Prepared and contributed papers informed panel discussions, and a rapporteurs’ report summarizing those discussions follows. All documents are available at http://web.mit.edu/mitei/.