1. consumers have an option of buying a toyota corolla or honda civic to a ford explorer. it is not like 50% of population need SUVs and pickup trucks.
2. consumers can purchase houses close to their workplace.
If everyone wants a five acre lot with a big backyard their commutes will be longer.
3. change the link between homes and schools. A lot of folks purchase their homes in neighborhoods which have good public schools. lots of folks live in suburbia and work in metro areas. it leads to a lot of gas consumption.
4. most people have voted against mass transit initiatives. mass transit works only if there is a critical mass in the network and in the number of users.