My son hit something in the road yesterday, when he got home noticed the smell of gas and went under the car there is a black plastic looking box on the passenger side in front of passenger side rear tire. That box has an inch long hole in it and leaking gas. Any idea what the name of this part would be? and how to repair it? I called Dodge dealer and they tell me it could be a vapor canister but he didn't sound very sure. Any help would be appreciated.