Well i can guarantee that the lotus F1 car and the Mazda 787B are quicker. And a quick look at the x leaderboard would have told you that the #1 time for that track in that class is a 51.088 and in p class the top time on that track is 55.677 with the mazda 787B. Heck its almost possible in R Class with a top time of 1:01.577.
Or are you asking in that specific car if its possible to do a sub 1 minute time?
Even tho the 787 is far superior to the r18 surely it must be possible to get the r18 within 4.4 seconds of the top time in the 787 there. If I can pull myself away from another certain racing game i will give it a run and report back.