2008 LEXUS GS 350 Visibility Problems

FROM THE TIME THE 2008 LEXUS GS, LABOR DAY 2008, WAS OBTAINED I HAD PROBLEMS SEEING AT NIGHT ON A DARK ROAD, HIGHWAY OR INTERSTATE. UNLESS THE BRIGHTS ARE ON THERE IS A BLACK WALL IN FRONT OF THE AREA WHERE THE LIGHT BEAMS STOP. I OVERDRIVE THE LIGHTED AREA AND DRIVE INTO THE BLACK NIGHT. THE BRIGHTS NEED TO BE ON TO SEE-WHICH IS A DANGER AND ANNOYANCE TO ONCOMING TRAFFIC. I HAVE TRIED TO GET THIS FIXED SINCE OCTOBER 2008. THE LATEST DATE BEING JANUARY 2011. LEXUS TELLS ME THAT THE HEADLIGHTS ARE ADJUSTED AS HIGH AS THEY CAN GO. I ASKED FOR THEM TO CHANGE THE BULBS FROM HALOGEN TO INCANDESCENT OR TO REPLACE THE ENTIRE UNIT. LEXUS SAYS THEY CAN'T DO THAT. THIS IS A VERY, VERY DANGEROUS SITUATION WITH THIS CAR. *TR