WARNING: Don't take this down!
It's Postman Pat vs Thomas The Tank Engine!
Update: I added part 5!
Original videos credit goes to @mashed:
• Man vs Train 1: Cartoon Nightmares
• Man vs Train 2: Cartoon Nightmares
• Man vs Train 3: Cartoon Nightmares
• Man vs Train 4: Cartoon Nightmares
• Man vs Train 5: Thomas Goes to Hell
Man vs Train is owned by Mashed
Thomas & Friends is owned by HIT Entertainment
Postman Pat owned by Woodland Animations