I am fairly confident of where the United Healthcare assassin escaped to. He escaped on an electric Citibike, according to police. 

I happen to continuously scrape Citibike data every minute, so I can see where individual bikes go. 

The only northbound Citibike to leave within

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That's some impressive sleuthing! It's amazing how data like Citibike tracking can offer unique insights into movements. Keep digging, it sounds like you're onto something interesting.