Overview: William Woollard tests one of a new generation of stepless transmissions, soon to be available in the Fiat Uno. With the approach of summer, Frank Page looks at a range of camper vans, while Chris Goffey hears of the conflict that can arise when trail riders and four-wheel-drive enthusiasts penetrate green lanes the ramblers feel should be ceded to them. For the motorist seeking high performance, the names Lotus and Maserati carry a special cachet. Sue Baker compares two of the latest models: the Esprit Turbo HC and the Biturbo Spider.