Zoloft (sertraline) is an antidepressant in a group of drugs called selective serotonin reuptake inhibitors (SSRIs). The way sertraline works is still not fully understood. It is thought to positively affect communication between nerve cells in the central nervous system and/or restore chemical balance in the brain.
Montana's current nighttime speed limits are 65 m.p.h. on Interstates and 55 m.p.h. on two-lane highways, and those are not affected by the court's ruling.
In reality, this hasn't been the case since 1987. Back in 1909, the state of Washington introduced a speed limit of one mile in five minutes (12mph) in thickly settled areas and business districts, and at one mile in two-and-a-half minutes (24mph) for rural areas.