This topic (replacement of ageing metal) has brought to my mind the matter of 
what the age of our automobile census might be, and why (or when) we replace 
our cars.  From the web:

 

The average age of automobiles on the road in California is approximately 

12 years. This is slightly younger than the national average, which is about 
12.6 years, as reported in 2024. While California drivers often keep vehicles 
longer, the state's high rate of new car sales, particularly electric vehicles, 
helps keep the overall fleet age slightly lower than the national average. 

Key Details on California/National Vehicle Age:

*       California Average Age: 12 years (as of 2024), according to Auto 
Innovators <https://www.autosinnovate.org/resources/insights/ca> .
*       National Average Age: 12.6 years (as of 2024), noted by S 
<https://www.spglobal.com/automotive-insights/en/blogs/2024/5/average-age-vehicles-united-states-2024>
 &P Global.
*       Segment Breakdown: Passenger cars in the US are older, averaging 14.5 
years, while light trucks/SUVs are younger, with an average age of 11.9 years, 
according to S 
<https://www.spglobal.com/automotive-insights/en/blogs/2025/05/average-age-of-vehicle-in-us>
 &P Global.
*       Ageing Fleet: The national average vehicle age has been consistently 
rising due to higher vehicle prices, causing consumers to keep their cars for 
longer, notes S 
<https://press.spglobal.com/2024-05-22-Average-Age-of-Vehicles-in-the-US-Continues-to-Rise-12-6-years-in-2024,-according-to-S-P-Global-Mobility>
 &P Global. 

The data shows that, despite high replacement rates, California's, and the 
country's,, vehicles are becoming more seasoned, with many on the road for well 
over a decade, as highlighted by S&P Global. 

 

Note that the term β€œage” is described in years, and not miles.

 

So we must remember that the 12 year number is an average over a very large 
number of cars.  Some are much older.  Some barely a year old.  And we might 
ask ourselves, why do we replace our car and what measure do we use?

 

Personally, I am an older person and a low-mileage user of my car.  This was 
not always so, but it is now.  In the present day, I replace my car primarily 
on the basis of maintenance cost and warranty limits.  In past years, I used 
mileage limits that I set on myself. Even earlier, it was just a budget matter. 
 In the very beginning, as a Navy pilot,  I just wanted a really spiffy and new 
sports car.  If we took a Mifnet survey of why and when we get a new car, , I 
guess that we’ll get many different answers.

 

In the final analysis, cars, airplanes, ships, and all vehicles have time or 
life limits.  But it is a complicated question.

 

For a fighter aircraft, maybe what matters is winning the battle.  But that is 
hugely complicated.  It certainly includes the pilot.

 

Bob Ditchey

 

From: Robert Ditchey via Mifnet <[email protected]> 
Sent: Thursday, January 29, 2026 12:39 PM
To: [email protected]
Cc: 'Dan Solon' <[email protected]>; [email protected]
Subject: [Mifnet πŸ›° 75276] Re: new fighter?

 

In my opinion, Joint use design is a disaster.  No decent aeronautical engineer 
would endorse it.

 

Bob Ditchey

 

From: Dan Solon via Mifnet <[email protected] 
<mailto:[email protected]> > 
Sent: Thursday, January 29, 2026 12:28 PM
To: [email protected] <mailto:[email protected]> 
Cc: Dan Solon <[email protected] <mailto:[email protected]> >
Subject: [Mifnet πŸ›° 75274] Re: new fighter?

 

I am totally unqualified to comment on the tech aspects of this. What I do 
know, however, is that previous efforts to develop joint

Air Force/Naval Air fighters (i.e., the F-111 and now the F-35B) have usually 
been unsuccessful. Only contrary case I can recall 

was the F-4, which I believe started life as a carrier-based aircraft and then 
went on to operate "1 if by land and 2 if by sea."

 

Daniel Solon

With a tip of the tricorne to "The Midnight Ride of Paul Revere."

 

On Thu, Jan 29, 2026 at 8:21β€―PM Jack Keady via Mifnet <[email protected] 
<mailto:[email protected]> > wrote:

keady: how do we feel about this? is it that much  more advanced than the 
expensive F-35? 

 


        

 



 
<https://mzpjmp.clicks.mlsend.com/tf/cl/eyJ2Ijoie1wiYVwiOjk5MTQyMCxcImxcIjoxNzc5NTUzMjIyODM5NTE4NzgsXCJyXCI6MTc3OTU1Mzc2NzAzOTk3MDg0fSIsInMiOiI2MjJkZGQyYjM2Y2YzMGFjIn0>
 U.S. Navy CNO Warns F/A-XX Must Launch Now to Face Future Air Defense Threats

        

2026-01-29

        

 
<https://mzpjmp.clicks.mlsend.com/tf/cl/eyJ2Ijoie1wiYVwiOjk5MTQyMCxcImxcIjoxNzc5NTUzMjIyOTEyOTE5MTIsXCJyXCI6MTc3OTU1Mzc2NzAzOTk3MDg0fSIsInMiOiIwYmNlYmIzZjRhMjBkZjVjIn0>
 

Chief of Naval Operations Adm. Daryl Caudle warns F/A-XX must launch now as 
Iran and other adversaries field advanced air defenses, ending the era of 
flying with impunity. The U.S. Navy’s next-generation carrier-based fighter, 
known as F/A-XX, appears to be still stuck in a limbo, almost a year after 
Boeing was selected to start building […]

 

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