My custom LEGO Technic 40th anniversary tow truck. I added headlights, replaced the rear wheels with tank tracks, and added 2 small power functions motors to the bottom for extra torque. :
LEGO Technic 40th Anniversary Video & More!
Extreme Adventure 42069 | Technic™ | Buy online at the Official LEGO® Shop US
Technic 40 year anniversary model | Brickset: LEGO set guide and database