What will best help a drunk driver sober up?

Time is the most effective factor in helping a drunk driver sober up because the body needs a certain amount of time to metabolize alcohol. The liver processes alcohol at a consistent rate, approximately one standard drink per hour, regardless of external remedies. While coffee, cold showers, and fresh air might make someone feel more alert, they do not accelerate the alcohol elimination process from the bloodstream. Only time allows the body to break down and clear the alcohol, restoring the individual to a sober state. This understanding emphasizes the importance of waiting until all alcohol is out of the system before attempting to drive, rather than relying on quick fixes that offer no real solution.