Personally , I doubt that there will be fewer cars in use in twenty years than there are today , based on my observations of falling vehicle prices , increasing population and stagnating rate of technological advance in the field of terrestrial transportation .
Personally , I doubt that there will be fewer cars in use in twenty years than there are today , based on my observations of falling vehicle prices , increasing population and stagnating rates of technological advances in the field of terrestrial transportation . Personally , I doubt that there will be fewer cars in use in twenty years than there are today , based on my observations of falling vehicle prices , increasing population , and the stagnating rate of technological advance in the field of terrestrial transportation . Personally , I doubt that there will be fewer cars in use in twenty years than there are today , based on my observations of falling vehicle prices , increasing population , and the stagnating rate of technological advance in the field of terrestrial transportation . Personally , I doubt that there will be fewer cars in use in twenty years than there are today based on my observations of falling vehicle prices , increasing population , and the stagnating rate of technological advances in the field of ground transportation .