First fire-up: hear MP4-31

First fire-up: hear the #McLarenHonda MP4-31 as it roars into action at the #MTC.https://t.co/YrS9u6vElJ

— McLaren (@McLarenF1) 14 fevereiro 2016

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PG2 engine NO MORE!????????? 

Let´s see ...

Bjuss, Tati