system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do people use 0-60 mph to benchmark the acceleration of cars?

Why not use 0-50 and what is significant about going to 60 mph?
gpt
Because the actual benchmark is 0-100 km/h, which get's rounded down to 60 mph. 0-100 is a nice round number, and since everyone except the US uses the metric system that's the standard. So the significance is that 60 miles is about 100 km.