Note: Values in items 1, 2, 4, 6, 8, 9, 13, and 14
are estimated averages, intended for reference only. Actual calculation will vary with usage or growth.
- A world average of individual
car usage is about 12,334 miles per year, which translates into (12,334 miles / 365 days) =
33.8 miles per day, or 54.4 kilometers per day.
- A world average of gasoline mileage per car is 31.2 miles per gallon,
which translates into 50.2 kilometers per gallon, or 13.2 kilometers per liter.
- Thus, the world average daily consumption of gasoline is:
(54.4 km/day) / (13.2 km/liter) = 4.12 liters per day per car.
- The average density of gasoline is 0.74 kilogram per liter.
- The world average daily consumption of gasoline is: 4.12 liters per day per car × 0.74 kilogram per liter =
3.05 kilograms per day per car, or 3,050 grams per day per car.
- The average energy released by the burning of gasoline is 45.8 kilojoules per gram, or 10.95 kilocalories per gram.
- The average global rate of gasoline energy consumption is:
(3,050 grams/day × 10.95 kilocalories per gram) = 33,398 kilocalories per day per car.
- An average person weighs 62 kilograms.
- To maintain his/her own weight, an average person needs 33 kilocalories per kilogram.
- Thus, a constant-weight average person consumes (62 kilograms ×
33 kilocalories/kilogram) = 2,046 kilocalories per day.
- Thus, the ratio of car-to-person energy consumption is: (33,398 / 2,046) = 16.3
- In summary, in terms of energy consumption, one (1) car is equivalent to approximately
- There are approximately 7,800,000,000
people in the world today (February 2020).
- There are approximately 1,300,000,000 cars (including commercial motor vehicles) in the world today (2020).
- The people in the world burn (7,800,000,000 × 2,046 kilocalories/day)
= 15,959,000,000,000 kilocalories per day =
15,959 teracalories per day.
- The cars in the world burn (1,300,000,000 × 33,398 kilocalories per day) = 43,417,000,000,000 kilocalories per day = 43,417
teracalories per day.
- The total number of calories consumed daily by people and cars amounts to 59,376 teracalories.
- This is equivalent to (59,376,000,000,000 kilocalories per day / 2,046 kilocalories/day/person) =
- The ratio between equivalent persons and actual persons is: (29,020,000,000 / 7,800,000,000) = 3.72
- Thus, current use of fossil fuel [in car transportation]
amounts to an equivalent population which is about 3.7 times larger than the actual value,
in terms of energy consumption and subsequent release
of carbon dioxide to the atmosphere.