The LEGO Technic set 42140 seemed to me like a good opportunity to create a classic racing ripsaw, just like the good old RC Tracked Racer 42065 from 6 years ago, but
LEGO TECHNIC: RC Tracked Racer (42065) for sale online | eBay
LEGO Technic - RC Tracked Racer (42065) | 3D CAD Model Library | GrabCAD