I've always managed to save money doing repairs myself...

Since he does this with two cars, you can probably find a good deal on a used car and spend less in 10 years, on both the car and repairs, than this guy loses in 1.

Seems that annual repair/maintenance costs on a car range between $400-$1200, over 10 years, that's $4000-$12000.

Looks like a new car loses about 12.5-20% value in the first year. So for two $35k cars, for him and his wife, dude loses ~$8800-$14000 in one year. Assuming he probably trades it in, I'd bet its on the higher end of that range. And since the average cost of a new car is $48k, he probably loses more (an additional $3200-$5200 per year). Say he does this for 10 years, that's $88,000-$140,000 (+$32,000-$52,000) he wastes. Nobody spends anywhere near that over the lifetime of a car (average being ~16 years) in repairs. Even if he somehow manages to do much better than these estimates, dude is legit an idiot.