Flight from Los Angeles connecting to New York and Johannesburg and on to Uppington, South Africa is $2,800 round trip and 33 hours each way.
100 air miles to Verneukpan.
You would have to be REALLY serious to consider this fun trip. Considering that you wouldn't have insider knowledge of the team planning. "Oops! They had to delay and will be here in two weeks." "The car is ready to go but the wind has been blowing for weeks." No guarantee that you could get anywhere near the race car to see it, and no guarantee that you could get close enough to even see the car when it runs. At 1000 mph the safe zone would have to be huge.
There are still two space shuttle flights left to see. I was in Tampa on business when there was a launch scheduled. I got up at 3:00 a.m. with a buddy to zip over to see the 6:00 a.m. launch. 2 hours later we are just pulling in when they scrubbed the launch. It was a long 2 hour drive back. Never did see a launch. I had a perfect spot picked out for the space shuttle launch from Vandenberg, right up the road from me. Did you know they were going to launch from there? Long sad story. Never happened.