Guy will be back on TV with a documentary on Channel 4 in October, featuring a two-year restoration project of a Spitfire followed by the second series of Speed due over the Winter, also on Channel 4.
Meantime here are a couple of short films for 4OD. If you dont like engines or Speed then probably best not to watch.
http://www.channel4.com/programmes/guy-martins-passion-for-life