He pleaded guilty to six infractions and paid fines between $19 and $79 between 2014 and September 2018, just before he was elected to office. He has been arrested for driving as much as 20 miles over the speed limit at midnight, records show. He was also cited for a seat belt violation and driving without a proper exhaust and muffler system.
South Dakota used to have a governor (Janklow) who routinely sped and never got a ticket because he was governor. Then he finally killed somebody with his driving. So maybe the attorney general was just following precedent.