1. An elderly woman was having a difficult time climbing the steps on to a Greyhound Bus at the Greyhound Bus station in Seattle. Sam, the bus driver, got off the bus and started pushing the woman up the bus’s steps in an effort to help her. As the driver pushed her up the steps, the woman dropped a large bag containing an oxygen device that the woman used when she had trouble breathing. An oxygen canister rolled away from the bus, and another bus ran over the canister. The canister ex­ploded, causing the large bus tire that had crushed the canister to ex­plode also. Some of the rubber from the exploding bus tire hit and se­verely in­jured Jim Stevenson, who was boarding another bus about twenty yards away. If Stevenson sues Greyhound for negligence, is he likely to prevail and why?