London 2012 Watch: BMW's Sustainable Olympics Fleet and more

• BMW talks up sustainability as automaker unveils colorful designs for Olympics loaner fleet of 4,000 cars and SUVs.

• Some London residents may get missiles stationed on their rooftops as city firms up security plans.

• London mayor Boris Johnson complains that Heathrow airport chaos is damaging UK reputation ahead of the Games.

• McDonald's Coca-Cola and Cadbury criticized for Olympics sponsorship.

• Yahoo plans biggest Olympics coverage ever thanks to P&G and Visa sponsorship.

• China signs Wurth as Olympics basketball team sponsor.

• Organizers struggle to keep up with web ticket sales to football/soccer fans.

• New technology will measure impact of extra traffic on London.