How much does a driving permission cost in California?

How much higher gas cost would driving with a 100 pound anvil from Alabama to California cost?

• I may be adding a 100 pound anvil to my belongings which I am driving from Alabama back to California with? But given the high added weight of the anvil, I am wondering how much more in gas I would end up paying if I drive back with it that far. Does anyone know how to calculate the added weight into gas mileage, increased total gas cost for a drive that is almost across the entire united states? Someone is offering me $100 if I take it with me when I drive from Alabama to San Francisco, California. If I drive straight through it would be roughly a 2,500 mile drive. My vehicle is a 2001 Nissan frontier XE, 2 wheel drive with a canopy over the back pickup bed.I am not sure of its mpg.

• Answer:

  Almost no difference at all. I drive from southern CA to WA several times a year in my 95 F250 diesel (1350 miles each way) and found my fuel costs to be the same when I go alone, or take my wife and 2 kids -an extra 250lbs. it were 1000 pounds,or a trailer- then it'd be another story. Take the money!!!