I can try to reproduce it except for the heavy rain. LOL!! Someone I know had a similar issue kind off. He rented a Ford Mustang in CA and was driving it thru the mountains and had about 1/2 tank of gas, all of a sudden he saw the fuel needle go from 1/2 to Empty in matter of seconds. He stopped checked everything, all looked well. He was able to drive 70 more miles to AVIS and exchange the car. He never found a resolution to the issue.