It is annoying how the architecture profession ignores transportation in its energy calculations. For example, a recent design contest for an infill development in Emeryville:
For the purpose of the competition, the ground floor of each building should be reserved for uses such as retail, the library, parking, or open space.
For an infill zero-energy development, the winners sure have a lot of parking. Perhaps the problem is the definition of zero-energy buildings, which makes no mention of transportation.