I have seen many of these articles about our car-share future. Few have addressed various factors like:<p>A family which keeps the car seats&#x2F;booster seats in the car, because it&#x27;s easier than moving them in and out each time. And extra diapers, clothes, toys, etc.<p>An avid windsurfer&#x2F;skier&#x2F;cyclist with special mounts for sports equipment, or someone who lives in mountains and keeps tire chains and sand in reserve.<p>Or medical gear.<p>People who buy things during lunch, and leave them in the car to take home with them after work.<p>How often are the cars cleaned, who decides what &quot;messy&quot; is, and who pays for the cleaning?