McLaren Speedtail prototype begins rigorous test program

McLaren Speedtail prototypeAfter revealing the Speedtail last month, McLaren has announced it’s ready to begin a rigorous test program for its new flagship Ultimate Series car. On Friday, the British marque unveiled the first Speedtail prototype as it gears up for a year-long test regimen across the globe. The prototype Speedtail doesn’t exactly represent the production car…

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