A Las Vegas family's routine shopping trip turned tragic when a stranger stole a running car from a Walmart parking lot. The thief then sped off with a sleeping passenger still inside, leading to a high-speed collision just blocks away. The victim was pronounced dead in the hospital. The suspect, identified as the thief, was taken into custody and has an extensive criminal history. This incident has been described as a crime of opportunity, as there was no known connection between the suspect and the man who was killed. The incident was a reminder of the dangers of leaving a vehicle running and unattended, which is illegal in many states and is often referred to as "puffing laws".