Here's my inspiration for the straight, from an old Road&Track issue
I had to finish this section because it will be difficult to get at when the rest of the track is done
Some video clips...with only one lane running and no scenery

In-car looking forward, at camera car speed
looking forward in slo-mo
In-car, looking back, at camera car speed
looking back in slo-mo
Brian Redman (not that one) driving a Scaley P4
The P4 from a different angle
The P4 in slo-mo
More pictures and videos coming when I've made some progress

Seven minutes long and about 27mb, but it gives a good idea of how the track works
3 lane Insert used for the first time
Slow motion of the 3 lane insert