Abstract
Gompertz law was first applied in the in the table of life insurance industry,Used to observe the laws of death. According to finding of the researchers later ,the mathematical model of Gompertz law was used in all aspects.
This paper examined the time - series regressions of individual countries and cross - section regression of rep2resentative countries as a whole. From international comparison of car ownership and income elasticities, this study concludes that the Gompertz function can exp lain the pattern of car ownership at country level worldwide,and then decreases after reaching itsmaxi2
mum value.
Keywords: car ownership; saturation; inflection point; income elasticity