The article mistranslates the Swedish term "mil" (1 mil == 10 km) into English/US miles. According to the summary and the map, the car drove around 250 km.
Here is a non-paywall version of the same event that says "4 mil" (40km): https://nyheter24.se/motor/1273809-tesla-forare-sov-pa-e4-me...