My partner and I clean the house (inside and out) together and don't mind those ranking days. We tend to do a little each day or so which means it doesn't mount up but we have a big cleaning day every couple weeks as well. She doesn't help with the vehicles, she's not up to my standard there, but she sits out and chats with me when I work.
I think it's nice to do those things together, as with you and your wife, and it makes the relaxation time, in a lovely clean home, feel nicer.
That is great you two do that together and share in the chore. Heck I bet it helps time pass washing the truck even if she just sits and chats with you.
If it's hot and she's got a bikini on the car washing takes way longer. 😉
I bet it does.