Yankee traders were known for their fast clipper ships.
It gave an easy way to get food, and was boosted by the post war economy.
A sluggish economy Narco means not fast slow
8km/h
Speed
Yes, Polish economy is changing very fast.
X-43 traveled at the speed of Mach 9.6.
800kph
ruffly 168mph
32 MPH
58 mph
The prototype traveled 200 mph (326 Kph)
4 mph