“Between 30% and 40% of car journeys made by the average UK household are less than 2 miles long.” (via BigGreenSwitch.com)
To put that in a less roundabout way, 30-40% of car trips are completely unnecessary.
Being quick, quiet, clean, healthful, sociable and fun (as just about everyone knows already), the bike is clearly the best option for short journeys around town. Look at local trips in the Netherlands: 35% are made by bike. And in some cities it goes up to 45%.
Should the role of cars be limited only to long journeys? Should transport planners design urban streets with this in mind?