You just need the right visor:
Hitch-hiker gets picked up in a gigantic luxurious Cadillac with Texas plates.
Driver introduces himself as "Squint" Ewing, Texas billionaire.
Hitcher notices a thick pair of glasses on the dashboard, and asks the driver if he needs to wear those to drive.
Squinty laughs "Heck no, son! I just paid a bit extra, and had the windshield ground to my prescription!"