I'm very pleased that you enjoyed the game. I designed it so that the side quests are as varied as possible, but I never expected that most players would 100% complete it. Thank you for taking the time to do this, it means a lot to me and motivates me to work on the sequel even harder.
Have you ever tested a keyboard/controller with macros function or a program to write scripts for keyboards? I'm not familiar with it, but I've read that many gamers use stuff like that. So this might be one solution. But in general I would recommend to play the game with a controller, because you run with the trigger buttons, which you always have to hold down in racing games as well. I could go on why controllers are better for the health of your joints but I do not want to annoy anyone^^