Car Talk #1045: Pi Over Two Dopes

Car Talk #1045: Pi Over Two Dopes: "A trucker with a busted gas gauge needs a formula to measure how full his tank is. Can two MIT grads come to his rescue? Also, a Honda Accord smells of burnt toast; why 'oil replenishment' is like vacuuming your living room with no bag in the cleaner; and, Tommy goes on the rampage against--Gomer Pyle?!!!"