The supercar that McLaren teased late last month with a tweet and a 13-second video has officially been unveiled: the electric blue, drop-top 720S Spider made an official appearance Saturday. In March of 2017, McLaren announced the 720S supercar, which the company claimed was the “dawn of a new era” for the brand. The McLaren 4.0-litre twin-turbocharged V8 engine generates a scintillating 720PS and 770Nm.