loud humming when i'm driving, when i remove my foot from the gas it stops.

more info req.to assist

Would need more details, but sounds like a bad wheel bearing or a bearing going in the transmission. I would recommend you have it professionally diagnosed.

Is the 'humming' directly related to whether or not you are stepping on the gas? Is the A/C on or off at the time the noise is occurring? What speed does the noise start/stop at? does putting it in a lower gear have any effect? Answers will help in ruling out certain possibilities.