When you fire the McLaren P1 into action it makes a rather unusual 'clicking' noise before firing into life, why is that?<br /><br />Sorry for the delay in posting this video!<br /><br />Thanks for watching, Tim<br /><br />Subscribe: http://bit.ly/Shmee150YT<br />Website: http://www.shmee150.com<br />Facebook: http://www.fb.com/shmee150<br />Instagram: http://www.instagram.com/shmee150
