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 MOC RC Crab - Lego Technic 42065 Alternate MOC by grohl | Rebrickable - Build with LEGO
LEGO® 42065 RC Tracked Racer - ToyPro
LEGO Technic - RC Tracked Racer - Set 42065 - NIB - In Hand, Ready to Ship 673419267502 | eBay