In 2020, there were 251,685 new cars and trucks registered in the Detroit metro area. This number is based on projections from the National Auto Dealers Associaton (NADA) and the U.S. Census bureau.

In all, says NADA, there are 614 new-car dealerships in Michigan. Despite the pandemic, these dealers, including those in the Detroit area, sold $38.2 billion worth of new vehicles.

Through June of this year, these same dealers have already rung up $20.5 billion in new car sales.

When it comes to buying new vehicles, Detroit consumers have a broad range of preferences. Some buyers want Fords while others want Chevrolets, Toyotas, or Teslas.  Some buyers want pick-up trucks, while others want sub-compacts, SUVs, or sports cars. Of course, some want blue vehicles, while others want pearl white, orchard green, or redolent red.

There is one purchase criterion, however, that most Detroit car buyers can agree on. They want an AM/FM radio smack-dab, in the middle of their dash.

There are more than 2,900,000 vehicles registered in Southeast Michigan. Many need new windshield wipers, shocks, struts, brakes, air filters, ignition coils, and the hundreds of other items that fill the shelves of local auto part dealers.

Despite the pandemic induced slowdown, business at auto parts stores has grown nearly 13% since February, according to the US Census Bureau.

This explosive growth in auto parts sales directly relates to the  average age of cars on Detroit's roads.

"Per the latest study from IHS Markit, the current combined average age of vehicles has hit a record of 11.9 years," Rimmi Singhi wrote this week on NASDAQ.com. "The aging vehicles are a boon to auto parts, replacement, and repair companies. In a bid to ensure long-term functioning of the aging vehicle population, customers are making investments to replace faulty vehicle parts and components."

Also contributing to the rapid aging of cars on the road is the current demand for used versus new vehicles. According to the Bureau of Economic Analysis, the personal consumption expenditures (PCE) for used cars is 25% higher in August than it was during the same month last year.