"It appears to use a couple of gas lifts.  The key is to make the pivot point work with the chain.  Similar bike here: https://www.youtube.com/watch?time_continue=20&v=B7Lqr_9u7jg"

"This is the sort of thing I always notice in NYC.  I am not alone..."

"https://www.youtube.com/watch?v=RYUYA3-acQw explains each button.  Its fairly straightforward but also easy to raise your self into an obstacle as the basket is a bit jerky.  "