The rest of your point seems to hold, though; if the subsidy is predicated on reducing CO2 emissions then the equivalent of 25mpg still isn't anything to brag about.

You are right I did my math wrong.

To make it a little clearer to people following along, 80 lbs of CO2 generate to move a Tesla 100 miles using coal generated electricity. 80 pounds of CO2 to move a 25 mpg gasoline car 100 miles.

I'll address why the coal number is the right one in commenting on the next comment.