Land Rover is Britain's last prized vehicle manufacturing success. In decades that have seen the ignominious disintegration of the country's once flourishing industry, the marque stands proudly as one of Britain's most notable achievements.It is not surprising, therefore, that having been passed around like an unwanted child by a succession of inefficient, feeble and downright opportunist companies, its future causes some misgiving. Fortunately it has resilience - even in its brief period under the BMW banner it survived and prospered whilst its saloon car stable-mate suffered all kinds of indignities.