most fuel efficient hydrogen car, fuel cell electric vehicle, velomobile
see Europe’s most efficient vehicles. This concept cars are fueled by water! With about 80 grams of water, the Thaiger H2 drives 1,000 kilometers. A small electrolyzer could split this water to hydrogen with solar. In gasoline equivalent one person could drive 100 kilometers with 0.03 liters or 7,800 miles per gallon. While ordinary cars drive only 22 mpg or 10 liters per 100 kilometers.