What did engines do before these devices? The world survived for close to 100 years before the nazi’s in amerika took over.
it’s all by design...
harry homeowner no longer has the ability and tools to work on their own vehicles...
they now have to be taken to car dealerships or repair shops that can afford to keep up with the latest tools and equipment that is required to work on these vehicles...
one main advantage is today’s vehicles are more reliable than vehicles from at a minimum of 40 years ago...