Better Cruising

On cruise faster/slower, where safe_velocity used to be skipped, is now given as cruise target speed. You can still exceed the safe velocity if you press the faster key again.
Edit: Now works with max velocity and max reverse velocity.

Say we have a vehicle with safe velocity of 22kph:
Old:
16kph, press key to go faster, new target 32kph. Engine will most likely explode. 
New:
16kph, press key to go faster, new target 22kph. Press key to go faster, new target 32kph.