Techcrunch takes a scientist’s data and speculates about the economics of replacing all the cars in the country with electric cars.

* total oil consumption in the U.S.: 21 million barrels every day (CIA Factbook)
* cost per barrel: $130
* days in year: 365
* total spent per year: $1 trillion
* percentage of oil consumed by passenger cars: 40
* total spent per year on oil for passenger cars: $400 billion
* at 5 interest, how much we could we borrow and pay $400 billion every year in interest: $8 trillion
* number of registered cars in the U.S.: 250 million (Wikipedia)
* cost of a new electric car, if mass-produced: $20,000
* value of a used car, if exported to Latin America or China: $5,000
* cost to upgrade average existing American car to a brand-new electric car: $15,000
* number that could be converted for $8 trillion: more than 500 million cars (i.e., twice as many as we have now)

Of course this leaves out Americans’ unwillingness to give up vehicle choice.