Texas Drive-In Movie Theatres:  

Yes they still exist in Texas and other parts of the United States.
Here's the location of some of those drive-ins in alphabetical order by city or town location:


Austin: 
http://bluestarlitedrivein.com



Fort Worth:
http://coyotedrive-in.com/fort worth



Graham:
http://grahamdrivein.com



Lewisville:
http://coyotedrive-in.com/lewisville




Lubbock:
http://driveinusa.com/lubbock




Mercedes:
http://wesmerdrivein.com





New Braunfels:
http://driveinusa.com/nb