I used to ride my bike around NYC. Then one day I was “doored,” and that was that — I was too scared to get back on a bike in city traffic. That’s why I love the idea of the light lane, a concept from the designers at Altitude, Inc. According to the Good magazine blog, “The system projects a virtual bike lane (using lasers!) on the ground around the cyclists, providing drivers with a recognizable boundary they can easily avoid.” That could help prevent some of the thousands upon thousands of bike accidents that happen each year. –Erica P.