We hate wires. We can't count the number of times that our headphones were unceremoniously yanked from our heads (or ear canals) because the wire got snagged while ordering our Brazilian man-servant about. Kleer solved this problem years ago but still haven't broken into the mainstream thanks in no small part to the preponderance of low-cost (and low-quality) Bluetooth headphones. That could change with the visibility provided by a new partnership with Mercedes to replace line-of-site infrared technology the company had been using. The deal will equip 2010 Mercedes-Benz E-Class and S-Class models with Kl