Changed CVT behaviour, far less annoying sound

 "Want to hear the most annoying sound in the world?" *Jim Carrey imitates a wankel running on a cvt*  
...Yeah, that's fixed now.

CVT now has a target rpm range, instead of a single rpm.  This lets the engine rpm vary with speed, so you don't have to listen to a single monotonous tone for 5 minutes straight.  Also results in a slightly faster response time.