The NTSB’s report did not indicate the Tesla driver was at fault and said the investigation is ongoing. But the news raises more questions about Tesla’s marketing of Autopilot, the company’s semi-autonomous driving software.

Tesla CEO Elon Musk has long promised that full self-driving capability is on the way — but it’s not here yet. And critics argue that slapping the “Autopilot” name onto a driver-assistance feature can lull people into a false sense of security, making them less likely to stay fully alert and therefor be more vulnerable to a crash.

Tesla has consistently defended its Autopilot feature.

Several crashes have occurred in the past while Tesla’s Autopilot function was engaged, including a few fatal incidents.

For example, one crash — also in Florida, and which involved a Tesla and a tractor-trailer — killed a Tesla driver in 2016. His Model 3 crashed while Autopilot was active, and authorities said the driver had not tried to control the car in two minutes.

Earlier this month, the family of an Apple engineer said it is suing the automaker. They blamed the Autopilot feature on his Tesla for his death. Tesla had said it determined the driver’s hands were not detected on the wheel for six seconds prior to the collision. The company declined to comment on the lawsuit.

Tesla’s Autopilot function has evolved in recent months and years, giving cars more advanced self-driving capabilities — but it’s still intended for use only with a fully attentive driver. It’s also not designed to work on certain roads.