"We hold patents on a variety of ideas. Some of those ideas later mature into real products and services, some don't."

Such a system would soften the initial blow, but more importantly, it would also stop pedestrians from being thrown forward by the vehicle. Secondary impacts, caused by hitting the tarmac or another object, such as a car, can often be just as dangerous, if not more so than the original collision. Google says its adhesive layer could be applied to the hood, front bumper and side panels to ensure the human is "caught" properly at different angles. It might sound silly, but we wouldn't be surprised if Google was already testing this concept with some of its bubbly self-driving cars.



