One way to cut down on transportation needs is to group all of your errands together into a single trip. That will cut driving/walking time and give you more time to focus on work.

One way to maintain this ideal gap would be more widespread deployment of adaptive cruise control (ACC), which enables partly automated driving.

Let's put it this way: it's almost a statistical certainly that by New Year's Eve of 2009, at least one of the people reading this will be dead due to a drunk driving accident.