I have lost count of my vehicles. Some Gasoline powered and some Diesel.
I do all my own maintenance, short of rebuilding Automatic transmissions.
Done it, didn’t like it. Willing to pay someone to reman those. Manuals are easy and fun.
Engines, seals, bearings, heads, valves, clutches, welding, machining, fabricating and even body work I do myself.
Although I get my cousin to paint because of my lungs.
Does help that I have a 3000 square ft shop behind the house with two car lifts inside and all the tools one wold require to make a living bartering out auto and truck repairs.
One of those things checked off my Preppers list long ago.
Machine I can fix.
My Grandkids tell people “PaPa can fix anything.
If he can’t, he can fix it so no one else can either!”