Sudden Acceleration Issue
 

Okay, so over the last week, my stang has been doing this thing intermittently where it will jump after I put it in drive. By jump I mean it revs the engine and goes without me touching the gas. Luckily both times I have had my foot on the brake and wasn't around anything. It only lasts a second, but it is unnerving when you don't expect it. I talked to a coworker and he said it could be some sort of sensor dealing with the trans, but wasn't too sure. Any ideas? Thanks guys.