Part one of two. The BMW M5 boasts a 500bhp V10 engine and the performance to shame most supercars but how will Jeremy Clarkson fare with its vast number of technological gizmos and one very annoying sat nav? Go to http://www.youtube.com tosee a full list of all high quality videos available on the Top Gear YouTube channel and don’t forget to visit http://www.topgear.com for all the latest news and car reviews.