I think it would be kinda cool to have a display in AC that shows how fast you're going in MPH or km/h, and also a trip odometer.
I've estimated that my main character runs about 89 MPH or so... based on how fast it took him to run 1 km. It would be fun to see how fast he runs when burdened or unbuffed, and also how fast things chasing him run.
I'll bet wasps break 100 MPH.


