Can I power an outdoor security light from a non-EV garage receptacle?
The 2014 NEC states:


  210.52 (G) (1). For attached and detached garages with electric power, the branch circuit supplying the garage receptacle(s) will not supply any outlets outside the garage. And at least one receptacle outlet shall be installed for each car space.


An "outlet" is defined as "A point on the wiring system at which current is taken to supply utilization equipment."

So, your outdoor floodlight power should come from elsewhere.

Sorry