In the US, as I suspect in many countries, many lower middle and working low class communities in single family residential areas have very high car to house ratios.
Often, two or three registered cars are used to keep one car functioning. This is not via stripping parts, etc., but, due to having to save money over weeks or months to either take the vehicle to legal repair business, or to take the car to a cash only backyard mechanic.
The philosophy- which I have practiced- is to purchase the most mechanically sound used car for the least money, based upon gut instinct and mechanical knowledge. Generally, such cars demand a simple tool kit, and an extra spare in the trunk, in addition to extra oil, tranny fluid, a spark plug, a couple of spark plug wires, and an spare serpentine engine belt as insurance. The required extra cars are used when the primary car has a small fender bender, minor damage to suspension parts, or when an unforeseen repair arises whose cost is large, but, less than the value of the car is*, when the repair work is completed. Combine this with adult children, and, two working parents and owning three and four older used cars per residence becomes a money saving proposition.
If you decide to do this, depending on your local jurisdiction, you likely will have to park all of your cars that are not run daily, off the street. As such cars generally are not high up on car thieves want to steal lists, parking extra cars in the drive way and using one's garage for a massive storage facility works well
*If the best effort to repair is worth more than the car and a spare car works, sell the car for scrap, and, begin looking for another used car. My wife hates this, but, I point out to her that over the last 20 years I have spent less than $60,000 on cars (total purchase prices for all cars paid in cash, as well as all licensing, insurance, gas and repair) while driving over 300,000 miles at approximately $.20/mile. Compare this sometime to running a new car which at 15,000 miles per year cost between $35k or so for five years for an econobox, and $100,000 for 5 years at 15k miles per year for a new decked out Mercedes CG63 AMG Coupe. For such money saving reasons, millions of us here in the US do this.