James May talks about test driving the Caterham 160 and 620R followed by behind the scenes action of the Stig flogging the 620R around the Top Gear track.
The best bits from series 21 as it goes out around the world. Includes EXCLUSIVE behind the scenes content. More clips will be added after every so .
Before the boys leave the studio and head to Burma they reflect on their personal highlights of series 21. Jeremy loved driving the McLaren P1 at Spa, Richard .