
It's about oneandonetenth times as fast as a Porsche 911.
In other words, 210.850 miles per hour is 1.03 times the speed of a Porsche 911, and the speed of a Porsche 911 is 0.9710 times that amount.
(for Porsche 911 Type 997 GT2, 2007 model)The Porsche 911 GT2 has a top speed of 204 miles per hour. It takes just 7.4 seconds for the GT2 to accelerate to 100 mph.
It's about as fast as The CRH (train).
In other words, the speed of The CRH (train) is 1 times 210.850 miles per hour.
(a.k.a. Hexie Hao, 和谐号, a.k.a. 和諧號, a.k.a. Héxié Hào, a.k.a. "Harmony")The CRH3 train which runs on China's BeijingTianjin Intercity Railway are capable of speeds up to 220 miles per hour. Theses train can make the 120 km (74 mi) journey from Beijing to Tianjin in about 30 minutes.
It's about oneandonetenth times as fast as an Arrow (archery).
In other words, 210.850 miles per hour is 1.051 times the speed of an Arrow (archery), and the speed of an Arrow (archery) is 0.95150 times that amount.
(250 g arrow fired from 60#/28" bow)A 250 gram arrow will reach speeds of approximately 200.60 miles per hour when fired from a 60lb, 28inch draw bow . Archeological evidence from the Ahrensburg valley near Hamburg, Germany indicates that arrows have been used since at least 11 to 12,000 years ago.
It's about oneandonetenth times as fast as a Lamborghini Gallardo.
In other words, the speed of a Lamborghini Gallardo is 0.910 times 210.850 miles per hour.
(for Gallardo LP 5502, a.k.a. Valentino Balboni, 2009 model)The Lamborghini Gallardo LP5502 model Gallardo has a top speed of 200 miles per hour. The Gallardo can reach speeds of 62 miles per hour in just 3.9 seconds.
It's about oneandonetenth times as fast as The TGV (train).
In other words, the speed of The TGV (train) is 0.910 times 210.850 miles per hour.
(Train à Grande Vitesse) (for SNCF TGV Réseau, a.k.a. "Network" model, a.k.a. TGVR) (maximum speed)The TGV Réseau sets have a top speed of 200 miles per hour. The train is capable of travelling the 425 km (264 mi) distance from Paris to Lyon in EastCentral France in about two hours.
It's about ninetenths as fast as a Peregrine Falcon.
In other words, 210.850 miles per hour is 0.8730 times the speed of a Peregrine Falcon, and the speed of a Peregrine Falcon is 1.150 times that amount.
(a.k.a. Peregrine, a.k.a. Duck Hawk, Falco peregrinus)The Peregrine Falcon can reach speeds of up to 242 miles per hour when diving. Falcons are sometimes sent to scare smaller birds away from airports to improve air traffic safety and were used in World War II to intercept carrier pigeons used by enemy forces.
It's about oneandonefifth times as fast as a Helicopter.
In other words, 210.850 miles per hour is 1.190 times the speed of a Helicopter, and the speed of a Helicopter is 0.840 times that amount.
(for AH64A Apache, a.k.a. Hughes Model 77) (maximum cruise speed)The AH64 helicopter, one of the primary helicopters used by the United States Army, flies at a top cruise speed of 176 miles per hour. The AH64 is the primary military helicopter of several nations including the United States, the United Kingdom, Israel, Japan, and the Netherlands. 
