Key legal question
Whether the cantonal court's factual finding that the motorcyclist was not speeding was arbitrary.
Extracted holding
The finding was not arbitrary and could not be overturned on federal appeal.
Extracted reasoning
Federal review of facts is limited to manifest error/arbitrariness. The submitted 'expertise' was not a true expert report and did not compel the conclusion that the motorcycle was speeding; the alternative interpretation of the circumstances was insufficient.