Key legal question
Whether the cantonal court arbitrarily found that the distance between the defendant's car and the police vehicle did not decrease during the follow-measurement.
Extracted holding
No. Based on the police report and the two officers' testimony, the cantonal court could find without arbitrariness that the distance had not decreased.
Extracted reasoning
Federal review is limited to manifestly incorrect findings; the defendant's argument was merely appellatory and did not show arbitrariness in the evidentiary assessment.