If the suicide bomber is really, really, really lucky, he might cause the tank to throw a track, which would temporarily stop it. However, modern tanks (including the Israeli tanks) have protective covers over the more vulnerable parts of the drive system:
An Israeli Merkava 
If the suicide bomber is really, really, really lucky, he might cause the tank to throw a track....
So the obvious question for the Pali Pancake Squad is this: Do you feel lucky?