As a pioneer in the car-sharing domain, Zipcar has established a wide ranging network, with penetration into 19 major metropolitan areas in the U.S., Canada and Europe.

FORBES: Three Reasons Why Zipcar's Worth $11

Second, the assumption of one additional percent of growth over a 15-year period possibly overestimates the effect in the early years, but underestimates to a far greater degree in later years when the economy is larger, the penetration is higher and the network effect is greater.

FORBES: Two Technologies Propelling India Forward

As mobile network operators gradually migrate of to CDMA from GSM in emerging markets, we expect the rate of CDMA penetration to increase, however at a slower pace, due to a larger mobile phone base.

FORBES: Qualcomm Gets To $48, Higher If CDMA Expansion Has Legs