Track a bear in the wilds of Shropshire, stun it with a potato cannon.
Attach bear to some stout metalwork.
Drive metalwork through France and Spain at speeds of up to 48Mph over a period of weeks with regular pauses to dangle bear upside down and peer at engine behind the bear.
NB: Bear should be liberally basted with rain/salt/mud and used to wipe hands after checking oil etc.
Salt your bear with Gibraltar salt/sand mixture and sun bake for several months.
Return bear to cold storage unit for some years whilst nothing else happens.
Move bear to well aired barn and allow to dry.