That’s against the law in MA, passenger would be at fault.
Motorist Responsibilities (see MGL Chapter 89, Section 2 and Chapter 90, Section 14)
Motorists and their passengers must check for passing bicyclists before opening their door. Motorists and their passengers can be ticketed and fined up to $100 for opening car or truck doors into the path of any other traffic, including bicycles and pedestrians.
Also, oops a Uber passenger just ended their ride early and got out to walk, opens door on the biker because they are flying too fast.
That’s against the law in MA, passenger would be at fault.
Motorist Responsibilities (see MGL Chapter 89, Section 2 and Chapter 90, Section 14)