The world's big thinkers have been giving the concept of disruptive innovation a pretty hard time recently. We've even written a feature about the row. So it is timely to be reminded that Clay Christensen's pet idea didn't get to be the pre-eminent business theory of our time for nothing.
Take this Tesla Model S, an upmarket, pure-electric saloon that accelerates in eerie silence as quickly as a Porsche Carrera. What's more, it has five seats (seven if you include the optional folding child seats in the back), spacious boots front and rear, an achievable range of more than 200 miles between charges and a dashboard, dominated by a giant iPad-style touchscreen, which never fails to draw an impressed 'Ooh' from passengers.
Finished in 'look-at-me' candy-apple red paint and slick alloys, it also caused more innocent bystanders' jaws to drop, and more satisfyingly, than any other car I have driven.