I would love to get into the 1/6th scale ones but the small size of my apartment combined with the sheer amount of other hobbies I already have consuming what little free space I have dictates that I have to avoid them until I can get my own house, then all bets are off!
I was going to do tyhat but then I saw that you beat me to it. So for anyone reading this that wants to see that, here is Adrian202's video on that ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5QFiLfz2cw0.html
The trucks are WPL RC cars, they have quite a few different trucks now including a full 6x6 Deuce and a Half as well as quite a few Russian trucks. They vary a little in scale from truck to truck but generally work well with action figures. Heng Long RC tanks also work well with action figures. Both are Chinese brands and you'll find the best prices on sites like Aliexpress or Ebay.
Kind of a rambling video I did about them ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-7RsCDzk3-NE.html A time lapse video of putting together one of the Toyota kits ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-uAVbyLiQxz4.html