In the night, I realized that Cadillac Ranch is just a few miles away, so headed out this morning to take pics – it was quite dark with sunrise still 20 minutes away, but I got some nice pictures anyway (used the camera flash quite a lot!):
MTTS day 6 – Sunrise at Cadillac Ranch
M&I / GBMINI 
Hi, Ian —
Went over to see you off from Amarillo, but from the pics above I now know why we couldn’t find you among all the other MTTSers. Been following your progress and picked up on your comment about 93 octane gas. I was always concerned about not being able to get 93 octane in Amarillo until a petroleum engineer told me that octane ratings are a function of altitude, not quality, i.e. higher altitude, lower octane. When I was in Santa Fe this summer the highest I could find was 89 as I recall. I have a pic of you in front of the Blue Sky mural. I’ll send it to your email address.
Safe motoring!