When cars were simpler, maintenance was considered part of the requisite skill to own a car - it was considered part of normal usage. Now that they have become

When cars were simpler, maintenance was considered part of the requisite skill to own a car - it was considered part of normal usage. Now that they have become a lot more complex and specialized, cars can do a lot more - but the trade-off is that it's no longer practical to maintain your car yourself. It makes more sense to outsource that activity to specialists.