The fact that the exhaust system will deliver the air backwards or to the side may help prevent fogging of {HEAD ~ certain things}, such as {TAIL ~ car or truck windows} 
The fact that the exhaust system will deliver the air backwards or to the side may help prevent fogging of { HEAD ~ certain things } , such as { TAIL ~ car or truck windows }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL