Just been attempting the 4 hour Tsukuba race, whilst watching a film on my computer at the same time to ease the pain. 3 and a half hours in, I had to pause the game to click for the next part of the film (watching it on YouTube), and somehow my thumb has moved the curser to the right without me knowing. I look back at the TV and press X straight away to continue racing, only to find the screen go black and the start of the race appear again. Obviously, my thumbs thinks faster than my brain does, and I didn't have time to tell myself that pressing the button would send me into a mad rage throwing the controller half way across the room and hitting the radiator. At least it was only 3.5 hours. I probably wouldn't be here to tell the story if I'd quit 23 hours in on the later races.
So yeah, Kaz, please put an option to confirm a restart for us idiots? Ta.