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This model I was converted from GTA SA mod in ZModeler and adapted to print in SketchUp. This is my first work and a lot holes I made after printing. Model has thick walls because I used very bad filament and model easy goes to break.
Some parts glued by super glue, cabine strengthened with paperclip's wire, soda and super glue. Also from paperclip made door hinges and handles.
Tractor run on four yellow gears which sells for Arduino. Also they used in project https://www.thingiverse.com/thing:1240754 wherefrom I took tracks and cogs.
Its not most powerful for outdoor but enought for home or asphalt. May be 3S will increase power, I still run it on 2S.
Because it need tank-style control and I have only classic car's control, I was made radiocontrol on Arduino (Nano with NRF24L01, L298N module). You can use simple discrete RC from tank toy or professional 6-8 channel equipment.
other description coming soon....
https://www.youtube.com/watch?v=LWkZRPncQ4o