Patrick, for the grand actions to the vehicle: you can keep going awhile longer if you get some gear.
I have a nice little folding cart, light, just barely strong enough to hold a grand action and keys, therefore light enough to carry easily. In fact, folded up it even will go onto the handles of my invaluable Versacart.
I believe (ach! Covid head!!!) that I bought it from Norm Cantrell in Oklahoma, who maybe still makes them?
So, it can be set to just the right height, and I can pull the action out onto it, and roll it around to wherever is most convenient. It's great for in and out sorts of jobs, to prevent having to dead lift the whole thing.
Getting it into the car -- with the hatch raised and the back seats lowered: I used to slide it onto a hand truck, carefully wheeling it to the open hatch, putting the top of the hand truck down on the threshold, and then sliding it up and in. As I got older, this got harder, and while I never dropped one, I got anxious. So now I take it apart. I have two Spurlock-style key clamps, each able to accommodate half the set of keys, and both with a strong carrying cord. So, I can take off the action (screws into a cardboard so they don't get mixed up), lift it off, and remove the keys, putting them into the key clamps, which can be carried to the car. The key frame can slide in sideways, and is easy to carry. The action can be slid in next to it, with some blankets in between.
It's tedious and more work, but at age 76 I'd rather be safe and fairly comfortable, instead of struggling.