Answer:
solar
Explanation:
China 3D Express Coach also is known as a three-dimensional fast bus is powered by solar energy and electricity. It is 4 to 4.5 meters high and passengers board on the upper level while vehicles lower than 2 meters can go through underway. The bus can carry 1200-1400 passengers and speed up to 60 km/h. It is environmentally friendly and reduces traffic jams congestion on the city roads.
