A MOTORIST was caught behind the wheel after taking a cocktail of ketamine and cocaine. Zak Wiltshire appeared in the dock at Reading Magistrates’ Court on Thursday, March 21. The 33-year-old, of The Close, Hampstead Norreys, admitted possessing the Class A-controlled drug cocaine. He further admitted possessing the Class B-controlled drug ketamine – a dissociative anaesthetic which can cause bizarre hallucinations.. Next, Mr Wiltshire admitted driving a blue Ford Focus after taking more than the specified limit of cocaine and more than the specified limit of ketamine. Finally, he pleaded guil…