I noticed a thunking noise that occurs when I back out of the driveway, shift into drive, and accelerate. The noise occurs just when the vehicle starts to move forward, and occurs only once until I repeat the sequence. It seems to be worse when I turn the wheel before shifting and hitting the gas. It's hard to tell, but it seems like it is coming from the wheel area. No other problems driving. Anyone else notice this? Could it be the CV joint? Any help appreciated.