The calculation is currently 'speed x 1.25' - that's how much HP gets taken.
'Speed' is roughly equivelant to km/h but it's a bit strange, but it scales correctly so it doesn't matter but I just thought I'd mention it before someone wets their panties over it saying 'well
acktually'..
That means you need to go 80km/h to take 100hp. That's damn fast. How can you expect someone to survive that? They don't even die, they just get downed..
Even at a high speed, it doesn't do that much damage, just take a look:
https://www.youtube.com/watch?v=FMCcKqIhMIoMaybe I should make it do
more damage, hmm..