I think you may be mistaken about amounts of energy. Typical modern domestic-use light bulb (ccfl) are rated around 20 watts. 100 W was the typical maximum in i

I think you may be mistaken about amounts of energy. Typical modern domestic-use light bulb (ccfl) are rated around 20 watts. 100 W was the typical maximum in incandescent light bulbs for domestic use, excluding some very bright halogen bulbs at around 200 W. 1000 W bulbs are mainly used in studio applications (as someone else mentioned) and for stage lighting. On the subject of getting around the block: A kilogram of gasoline contains some 46 MJ of energy. Gasoline is a bit lighter than water, so one kilo is around 1.3 liters. 46 MJ is equal to, roughly, 13 KWh, so 4.5 KWh are around 300 grams, or around 400 ml. A Manhattan city block is around 80x280 Meters, for a circumference of roughly 720 Meters. An inefficient modern car might use 8 Liters per 100 Kilometers, so 400 ml (or roughly 4.5 KWh) will move an inefficient modern car by around 5 Kilometers. In other words, it'll get you around the block. Not once, not twice, but slightly less than 7 times.