A 2013 FORD FLEX RENTAL VEHICLE USED FOR A 4-HOUR DRIVE FROM THE SAN DIEGO AREA TO SOUTHERN ARIZONA WAS LEAKING GASOLINE FUMES, WHICH KEPT ENTERING THE CABIN AND MADE ALL PASSENGERS NAUSEOUS, INCLUDING AN ELDERLY FEMALE WITH ALZHEIMER'S DISEASE. THE VEHICLE WAS PARKED INSIDE A GARAGE OVERNIGHT AND THE FOLLOWING MORNING ALL THE INTERIOR AREAS OF THE HOUSE, INCLUDING ALL BEDROOMS, WERE SATURATED WITH A VERY POTENT SMELL OF GASOLINE. AFTER INSPECTING THE HOUSE, IT BECAME OBVIOUS THAT THE FUMES WERE COMING FROM THE RENTAL 2013 FORD FLEX VEHICLE, AND THE GARAGE HAD AN EXTREMELY POTENT CONCENTRATION OF GASOLINE FUMES. ALTHOUGH THERE WAS NO EXPLOSION, WE ALL FELT ILL AND TOOK US ABOUT A WEEK TO FULLY RECOVER. WHEN THIS HAPPENED WE WERE IN AN AREA WITHOUT PHONE OR INTERNET ACCESS, BUT I REPORTED THE INCIDENT TO THE RENTAL COMPANY WHEN I RETURNED THE VEHICLE TO THE RENTAL COMPANY, BUT THEY DID NOT APPEAR TO BE TOO CONCERNED. *TR