I remember the J C Whitney catalog from the 1970's during the gas shortages.... if you would total up all the gas saving devices when installed on the same car, your gas tank would overflow from the fuel savings. :)
If you have 2 comm radios, why not antennas in both locations. The Piper Cherokees that I flew in the 1970's for PVT, Commercial, and instrument all had the antennas on top.
40 years ago, Pre GPS, I brought a new Piper from Vero Beach, north To Pennsylvania with No radios... followed the coast and I-95 and avoided complex airspace.
The Commanders had an odd filler cap...….. an approximately 3" diameter machined disk with a long shank Dzus fastener thru the center, that mated with a flapper valve at the bottom of filler neck. not an easy one to modify. The piston planes and the turboprops had the same filler.
If they would reduce the dozens of re-up letters and free hats, they could reduce the yearly dues....I suggested an on line magazine to save postage costs….no responce.
Start engine, stabilize at idle, then turn on the alternator:
Been doing that with my homebuilt for 42years....Piper/Chrysler alternator and now Denso alternator for the last year.
I have a 20 gallon air tank. Charged to 125 PSI by the home compressor, it is more than enough to complete a compression test. The remaining air is used to blow dry wheel bearings, etc, and air left over to top off tires for the next 6 months.
My tool box still contains old bearing cups for 1 1/4" axels and 1 1/2" axels
that had the outside diameters of the old cups ground down for use as drive tools.
Setting aside the pro and con of Nascar, Imagine computing power it takes to do that....
and think back about what the Gemini space program had to work with in the capsule.