Jonny Smith takes a look at the Bentley Mulsanne Speed. Bentley claim its the fastest limo in the world and whilst it certainly has the luxury of one, does it earn .\r<br>\r<br>Welcome to Fifth Gear on YouTube! Within this channel youll find everything a petrol head could dream of.. from great reviews to incredible challenges and .\r<br>\r<br>The worlds fastest ever crash test -- just how big are the forces involved and how much of a family car is left after it crashes at a speed not uncommon on British .
