I'm with everyone else - see a doctor. This doesn't sound right. I'm older than you and drove from Taos, NM to the Grand Canyon (with a fair amount of off-road) and back in May. NJ to FL and back early in the fall. NJ to Bellingham, WA and from Bellingham to Taos pulling a new trailer this fall. No accidents, no hesitation, no close shaves and no blowing horns. Other than the Grand Canyon trip, all were solo. I had a 1,000 mile driving day on the way to Washington State.

Hope to drive a whole lot less this year.