7 years playing with RC tractors and trucks? I admire him for simulating a whole digging site, but I hope also that he was doing his hobby just 2-3 hours per day.
One the one hand, the scale of this dirt playground and expensive radio controlled cars would make any grown man weep for a chance to be 10 years old again. On the other hand, you have to hope that this much obsession for 100% perfectly-scaled realism isn't as creepy as it looks.
In any event, this is impressive.