Got the Red one up to 109 in the fall of 2009 on I-75, after checking for the LEOs. There is a stretch of 75 around mile 203 that has a fence in the median - so if you see nothing, turn around and go for it - if one coming the other way sees you, he can' turn around for about 4 miles!

The other one was in the Graphite on the Cherahala - I was up there alone a year or so ago. Did the same thing, looked around, saw nothing, no aircraft overhead and I risked it.