The Ray Sphere was a device used by transferring the neuro-electric energy from a group of people to concentrate it into a human indevidual to unlock his/her powers. Though it will unlock the dormant abilities of the Conduit, it will kill the catalysts, and worse, cause a catastrophic explosion.
How many gallons of gas does the average mid-size car hold? The average fuel tank size for mid-size cars is 16 gallons. If the  price of gas was $3.59 per gallon, it would cost $57.44 to fill a  16 gallon tank.
Most modern cars have gas tanks that will hold somewhere between 15 and 25 gallons. Some smaller cars have 10 or 12 gallon tanks. Bigger vehicles can have larger gas tanks or multiple tanks. The size of the gas tank doesn't have anything to do with the gas mileage.