As James May spends most of his spare time in his workshop tinkering around with old motorbikes, we thought we'd film it. James is faced with reassembling a 1970s Honda Z50A Mini Trail Motorcycle from all its 303 component parts. This exciting and portable mini motorcycle was fun for all the family and got a whole generation of kids hooked on motorcycles for the rest of their lives. This is an object James can't wait to reassemble, but along the way he faces a very real and very hostile battle with some springs, ponders over correct workshop etiquette and contemplates the lifelong debate - what's the difference between a bolt and a screw?