A Taxi of Tomorrow glass skyroof shattered on Monday night, sending shards of glass onto the passengers inside of it.

The Observer got a copy of an email from a Greater New York Taxi Association executive to Deputy TLC Commissioner Raymond Scanlon, which describes the incident:

“According to the driver, he heard a cracking noise - shortly thereafter two of the three passengers started complaining that glass was falling onto them from the roof of the car. The third passenger, a small child, was terrified. Fortunately and amazingly, no one was seriously injured.” The vehicle had been serviced by Nissan staff that same morning. No issues were found at that time.

The Greater New York Taxi Association (GNYTA) has been a major opponent of the Taxi Of Tomorrow program—Nissan won a 10-year contract with the city worth an estimated $1 billion to produce redesigned city taxis—filing three different lawsuits against the Taxi of Tomorrow program and successfully delaying production (which was supposed to have started in 2012).

GNYTA director Ethan Gerber railed against the glass ceilings to The Observer: "It was entirely foreseeable that putting glass roofs on cabs would put passengers and drivers at risk...Glass roofs are absurd in these conditions. Taxis are not tour busses. They are essential transportation that millions of New Yorkers rely on every day to get to where they need to go."

This isn't the only functionality problem to face the program: Nissan has been roundly criticized for not making the cabs more wheelchair-friendly, which led to Mayor de Blasio proposing a 30-cent taxi surcharge to help fund a smaller line of new handicap-friendly cabs.

Update: You can read the full email from Gerber to TLC Deputy Commissioner Raymond Scanlon below: