In mph; 340 kph is about 211.
211 kph = 131.1 mph
40,000 kph = 24,854.85 mph
98 kph = 60.9 mph
43 mph = 69.2 kph
121.167 mph
1 kilometre = 0.62137119 miles 270 x 0.62137119 = 167.7702213 270 kph = 168 mph (approximately)
100 kph = 62.14 mph
275 kph = about 170.877 mph
340 kph = 211.26 mph
75 mph = 120.7 kph
600 kph = 372.8 mph