Spy shots of the Ferrari SF90 Stradale Spider.

Ferrari is testing what appears to be an open-top version of its SF90 Stradale plug-in hybrid supercar.

The flat-roofed prototype may resemble one of the SF90 Stradale's fixed-roof test models, but it lacks the roof-mounted antenna that was present on the previous car. The new antenna location appears to be further back on the roof.

The area covering the engine bay also appears to be wider and flatter than the SF90 Stradale coupe. It would make sense if this area was designed to raise and lower the roof, similar to the mechanism on Ferrari's other mid-engine convertible, the F8 Spyder.

Ferrari has not announced plans for an SF90 Stradale convertible, but given its plans to produce 15 cars by the end of 2022, the arrival of such a car is likely. A convertible was also recently added to the 812 Superfast, while the Portofino convertible spawned the Roma coupe.

With a new roof, the SF90 Stradale convertible should rival its coupe counterpart. This means not only a twin-turbocharged 4.0-liter V8, but also an eight-speed dual-clutch transmission and a trio of electric motors. The power output of this system is the highest for the LaFerrari at 986 hp. The two electric motors are mounted on the front axle and form a hybrid all-wheel drive system with precise torque vectoring. These two motors can also provide propulsion when the SF90 Stradale is in electric mode. The battery capacity is 7.9 kilowatt-hours and the range is about 15 miles. Other features include acceleration from 0 to 62 mph in 2.5 seconds and a top speed of 211 mph.

The SF90 Stradale convertible is scheduled to debut later this year. Possible designations for the new roof variant are Spyder or Aperta. The car is expected to be one of two new Ferraris to be introduced in 2020. The second car will likely be the updated Portofino.