CleverRaven/Cataclysm-DDA — pull request #9761 by malhawee (2014-10-31 06:54:16+00:00)
Title: Fixes really fast reversing

It was fun turning off cruise control and reversing at 100kph on my quad, but since its max speed was about 48kph, that shouldn't really be possible without the engine exploding.
Now strain check returns non-zero result when velocity is negative and over safe velocity, fixing this bug.