Earlier quoted context omitted.
1M km (Tm?) is less than 750k miles, for those more familiar with customary units. https://en.wikipedia.org/wiki/Irv_Gordon had a Volvo with over 3.25 million miles (5.2Tm), although it's also had 3 engine rebuilds.
"Customary units"? I hate to break it to you, but most of the world uses the metric system. And the conversion is actually fairly simple. 1M km is 600k miles, so you were in the ballpark.
Metric is really far simpler, while Freedom Units are like going back to counting change in Roman-inspired £sd.