system
A chat on subreddit /r/wallstreetbets
human
The 'complicated car' isn't the impediment to mechanics... The costs of specialty equipment is.   
  
 My old car had headlight lamps INACCESSIBLE with standard tools! You had to move the fascia out of the way to reach behind the housing!  Not a job for a shade tree mechanic, or advanced DIYer.

gpt
It's the impediment to mom and pops. They can shell out several thousands for specialty tools that get used once, or ship it off down the road.