If you just look at typical cruising speed, the fastest is the Boeing 747-400ER (used only by Qantas), which cruises at Mach 0.855 (495 knots at 35,000 ft). The fastest civilian aircraft currently in operation is the Cessna Citation X, which cruises at Mach 0.92 (525 knots at 35,000 ft). Views Â· View Upvotes.
The Vietnamese currency is the dong (abbreviated to âdâ). US dollars are also widely used, though less so in rural areas. For the last few years the dong has been fairly stable at around 21,000d to the dollar. Where prices on the ground are quoted in dong, we quote them in dong. Likewise, when prices are quoted in dollars, we follow suit. Thereâs no real black market in Vietnam.
Click to hide. The Vietnam Dong (VND) has been the currency for the country of Vietnam since May 3, 1978. The State Bank of Vietnam issues the currency. The word 'dong' comes from the term 'dong tien', literally meaning money, referring to Chinese bronze coins used during the dynasitc periods of Vietnam and China.