Hey it's technology :) Frank Stephenson is McLaren's chief designer and has hinted at a new system to replace the wipers. It is thought to involve using ultrasound to send 30kHz waves across the windshield, which would keep it clear of any debris, even those really horrible insect remains that can build up and obstruct your view
How does it stop such debris? By creating a force field that stops rain, snow, or insects ever reaching the windshield. If they can't touch it, then the glass will remain clean and clear.
A lack of wipers brings with it multiple benefits to the driver. For one, no wipers means less things to break, so no more regular wiper changes. You also aren't scraping rubber across glass repeatedly so the driver will always have a better view and the glass will require less cleaning. There's also thought to be a fuel saving, however small, due to the lack of wiper apparatus interfering with airflow over the vehicle. And the final benefit: total confusion for anyone trying to clamp a flyer underneath one of your wiper blades.