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I take a sports car (okay, it's a sphere) and accelerate it to about 318 km/h, at which point acceleration is almost non-existent.

Since everybody seems to like car related stuff, here's another personal project I worked on many months ago. I wanted to make a system for simulating cars, but when it came to the "magic formulas" (that's actually what they're called) I got a bit lost, so I never continued.

In its current state it can calculate weight transfer, slip ratios, resistance, transmission ratios etc. I had to read a ton of tutorials to get this done.

I'm not using the particle forces in this, so I had to do the velocity integration over time myself. Unfortunately my math is too rusty to even read the Runge Kutta equations, so the integration is Euler based (I think that's what it's called).