Having a few drinks before driving home after work:

Driving a motor vehicle while under the influence of alcohol is prohibited in Hawaii. Alcohol slows normal reflexes, interferes with judgment, reduces alertness, and impairs vision. If you feel stimulated after drinking, it is simply because your inhibitions are lowered, causing a loss of caution and self-control. It is safest to refrain from driving when you have consumed any quantity of alcohol.
DMV Writen Test