Why isn’t there a hi-tech alternative to the windscreen wiper?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts
  
  

windscreen wipers in action in Les Quatre Cents Coups (1959).
Still going strong ... wipers in action in Les Quatre Cents Coups (1959). Photograph: Ronald Grant Photograph: RONALD GRANT

One of the very few parts of the motor car that has remained virtually unchanged for 100 years is the windscreen wiper. Why hasn’t anyone come up with a more hi-tech solution for clearing rainwater from windscreens than a squeegee blade mounted on the end of a metallic arm?

Nick Jones, Hereford, Worcs

Post your answers – and new questions – below or email them to nq@theguardian.com

 

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