The Spanish Aerocar has been ferrying tourists over the Niagara Falls Whirlpool since August 8, 1916 to the present, without any accidents or injuries. Designed by a Spanish engineer, Leonardo Torres Quevedo, and built in Bilboa, Spain, the cable car is suspended from six sturdy cables between 2 different points of the Canadian shore of the Niagara River. The lightweight aluminum car holds 35 people. Since it was built, the Spanish Aerocar has only had 3 upgrades, in 1961, 1967 and 1984.Even though the Spanish Aerocar travels between 2 Canadian points, the 1 km (.6 mile) roundtrip ride crosses the American/ Canadian border 4 times. (500 feet (150 m) into the ride, the car travels through US territory for 200 feet (61 m), returns to Canadian territory and then does the return trip.) The car is powered by an electric 60 horsepower engine and travels at about 7 km/h (4.3 mph). The cable car travels 200 feet (61 m) above the river and whirlpool.From the Spanish Aerocar, tourists get a spectacular view of the 60 acres (0.24 km2 Niagara Whirlpool, formed where the Niagara River makes a 90 degree bend, below. The Robert Moses Hydroelectric Power station can also be seen from the car, as well as fishermen on both shores.