This might be the inspiration for the hidden side train : r/LEGOtrains
LEGO Hidden Side Ghost Train Express + AR App demo & review! 70424 - YouTube
70424: Ghost Train Express Hidden Side Set Review - BricksFanz
Best Buy: LEGO Hidden Side Ghost Train Express 70424 6250516
LEGO MOC Hidden Side Ghost Train Express 6x16 Caboose by gijoseph25b | Rebrickable - Build with LEGO
LEGO Hidden Side Augmented Reality Ghost Train Express 70424...
Ghost Train Express 70424 | Hidden Side | Buy online at the Official LEGO® Shop US
LEGO Hidden Side: Ghost Train Express with AR Games Set (70424) Toys - Zavvi US
Ghost Train Express 70424 | Hidden Side | Buy online at the Official LEGO® Shop US
LEGO Hidden Side Ghost Train Express (70424) (NISB) | eBay
Ghost Train Express 70424 | Hidden Side | Buy online at the Official LEGO® Shop US
LEGO Hidden Side Ghost Train Express 70424 - Walmart.com
Ghost Train Express 70424 | Hidden Side | Buy online at the Official LEGO® Shop US
Ghost Train Express 70424 | Hidden Side | Buy online at the Official LEGO® Shop US
Ghost Train Express 70424 | Hidden Side | Buy online at the Official LEGO® Shop US
LEGO Hidden Side Ghost Train Express 70424 - Walmart.com
Ghost Train Express 70424 | Hidden Side | Buy online at the Official LEGO® Shop US
Buyr.com | Building Sets | LEGO Hidden Side Ghost Train Express 70424 Building Kit, Train Toy for 8+ Year Old Boys and Girls, Interactive Augmented Reality Playset (698 Pieces)
Ghost Train Express 70424 | Hidden Side | Buy online at the Official LEGO® Shop US
Ghost Train Express 70424 | Hidden Side | Buy online at the Official LEGO® Shop US