In that vein during the same race weekend (July 4, 2010 dbl nat'l), I was run off the road early in the 8AM 1st practice by a nominally very fast DSR that was going down the RH side of the main straight 30mph off the pace. He said he switched to the LH side of the road to give me room on the inside. Unfortunately I was already alongside him on the outside by the time he did that. And then he insisted, in a VERY confrontational manner, that I caused our slight contact "because I was passing him."
That was the penultimate straw. The wreck I described in my earlier post in the 1st race was the final one.