Update car.js

added time for each car, commented out get.segment since it seemed to be overwriting our assignment
Update racer.js

Got more than one car working on the same track (but opposite sides).  Need to change bezier curve points for each lane.
Update car.js

Added offset so cars can be in different lanes
Added car in lane 2, optional car in lane 3

Also made the curves and transitions smoother.  Need to fix turning at different speeds.
Update car.js

Two cars, changed initial settings.
Merge pull request #3 from townmath/selfdriving

Selfdriving
Merge branch 'selfdriving' into gh-pages