In countries with major car manufacturers, such as USA or Germany, a certain degree of car dependency might be positive for the economy at a macroeconomic level, since it demands automobile production, therefore resulting also in job demand and tax revenue. These economic conditions were particularly valid during the 1920s when the number of automobiles, worldwide, had a substantial annual average increase, but also during the post–World War II economic expansion. Notwithstanding the growing effects provided by the automobile on the economy of some countries, several other auto-dependent countries, deprived from automobile industry and oil resources, have to allocate substantial economic assets, to satisfy its mobility policies, affecting then their commercial balance.