But now German car giant Volkswagen has turned fiction into reality by unveiling a fully automatic car which really can drive itself - and at speeds of up to 150mph.via Daily Mail
It can weave with tyres screeching around tricky bends and chicanes, and through tightly coned off tracks - without any help or intervention from a human.
The GTi has electronic 'eyes' that use radar and laser sensors in the grille to 'read' the road and send the details back to its computer brain. A sat-nav system tracks its exact position with pin-point precision to within an inch.
The car can then work out the twists and turns it has to negotiate - before setting off at break-neck speed through a laid out course on a test track.