this is very interesting. A lad called "Sariel" got inspired by World of Tanks and built a Lego Technic RC T29 Heavy Tank, check it out:
"Model of the T29 US heavy tank prototype. Features drive, steering, elevated cannon with a shooting mechanism, rotating turret, ball-mounted front MG panned & tilted remotely, opening engine deck with a V6 piston engine, full suspension, lights, custom stickers and SBricks."
The amount of work and detail put into it is just amazing!
This are the links of his webpage with instructions included:
T29 Heavy Tank
T29’s Shooting Mechanism
TankPorn (Do not question what I browse!)