Then there was Gordon matching Montoya's lap times in Montoya's Williams on the Indianapolis F1 course... ... Montoya tried Gordon's car, with far less impressive results.
You greatly exaggerate here my friend.
From Gordon's own website.
After one practice lap, Gordon followed with nearly seven laps at speed. The traction control, barred in NASCAR but legal in F1 racing, was put to good use by Gordon coming off the corners. He went off course, albeit briefly, on his first speed lap under braking on the infield straightaway but was turning consistent 1:17 (one minute, seventeen seconds) laps by the end of the run.
To put Gordon's laps in perspective, the pole at last year's U.S. Grand Prix was 1:10 while the slowest speed in the field was 1:13. Montoya then turned a few more laps in Gordon's Chevrolet, clocking in less than a second slower than Gordon's fast lap on the Indy road course during preparations earlier in the day.
They say Montoya was less then a second slower then Gordon in the stock car.
Meanwhile Gordon's best lap in the F1 car was a.................... 1:16.7
Montoya's qualifiying lap for the US GP that year was.............. 1:11.4
5 seconds is an eternity in racing fast laps, with the 107% rule Gordon's lap would not have even qualified for the Grand Prix. I don't know where you got that Gordon was "matching Montoya's lap times in Montoya's Williams on the Indianapolis F1 course" it's not even close.
Not ragging on Gordon at all, I admire his skill, I probably couldn't even get an F1 car (or NASCAR) around a single corner without dying. This was after all just a publicity stunt, and I'll bet the FIA folks told him to not push to hard for fear of crashing a multi-million dollar race car. I'm sure if he dedicated himself to it he could be competitive in F1. Just saying you kinda misrepresented the facts there.
PS: I do like Gordon better then Montoya by far though, no matter what sport. That Montoya guy is a class A Jerkwad.