The science experiment is over. Hydrogen fuel cars are real. Toyota and Hyundai proved it with their Mirai and Tucson FCVs. Now Honda has taken the technology a step further. The 2017 Clarity is real, and it’s really fun. Honda’s fuel cell entry is a stylish four-door sedan that offers premium cabin comfort and cargo capacity for five passengers and their gear. This is possible because Honda engineers downsized and repositioned the engine components so