We need to bring our transportation system into the 21st Century.  Needed improvements to ensure modern, clean and low-carbon transportation for all of us includes: better public transportation, including zero-emission bus service, in urban, suburban, and rural areas; safer streets for walking and biking; new infrastructure for electric vehicles; expanded light rail service; and new programs to enable residents, including low- and moderate-income households, to trade in old gas-burning vehicles for cleaner, more efficient hybrids or electric vehicles (EVs).