The comment about the GNX's , " many went straight to drag strips " is a little off , more like most all of them went into climate controlled garages is more like it .
Not surprised the TTA is in there , nice they place it second . But IMO , as should , they should have the attraction very close to a GNX , but they don't . As rare as they are , and the impressive duty they had at Indy , they are not getting their spot in the limelight . And by that , I mean the values have certainly not climbed to where you would have expected on such a low production rare car should have . An apple to apple condition/miles 87 GN still out sells a TTA and they made 20,193 ??????
One can predict , but the general public has the final say in what becomes collectable/valuable.