Moving away from your own driving ability, it is nevertheless true that humans are overconfident in their own skills in general. As I say, the statistics demonstrate how untrustworthy humans as drivers should be. Fatal accidents, severe or slight injuries, or just damage to expensive equipment are commonplace and really need not be. Hand over day-to-day driving to a system and the reduction in accidents will certainly be huge. Not total -- because, despite TTT's protestation, no-one ever claimed they would be perfect -- but as near as dammit. Today the road deaths per year are over 1500 in the UK (interestingly, there has been a huge reduction in the last few years, from a high of 3,500 in 2003); does anyone seriously expect this figure to increase if unreliable, temperamental, easily-distracted humans are largely removed in favour of an automatic system?