Thank you so much! (And sorry for taking so long to reply!) The Top Gear/Doctor Who/Sherlock Holmes snippet was indeed a crossover with Life on Mars as well, and in fact it was also the same fic as the Top Gear/Silent Hill/Torchwood crossover in the original post. It was also going to incorporate Final Fantasy XII, The Real Hustle, Harry Potter and Supernatural. Just a very overambitious and ill-advised project all round.