It takes me about 5 hours to do a full service detail on a large truck. When you are doing production, you are motivated by getting done fast, so your arms are flying like karate kid. When I was working for my friend, me and him would do three full service details in a day, with about 3 hours devoted to each. I'm doing my own now, and it's 4-5 hours depending on the size of the vehicle when I'm doing it myself.
10 minutes for me to clean the car with an ecowash near-waterless and microfiber towels, and I used to use a BOSS sprayer with my buddy, but now I go cheap and just have a pump chemical sprayer, and I don't see a difference in speed at all, and $10 from Ace Hardware compared to $400+ for the BOSS sprayer, and have to worry about charging it and the ecowash he had with some wax additive was messing up the motor after awhile.
30 min usually on the wheel wells and tires/rims. I just spray tire and wheel cleaner on the tire and rim, and use all purpose cleaner in the wells, then use a short handled brush to do teh outer surfaces, racoon tail brush for the inner part of the rims, and a long handled brush to scrub all under the wheel well, then give a quick light rinse with the ecowash, then wipe it all down with microfibers until it's dry.
It takes me about 45min to an hour at most to do the clay bar on a large vehicle, and that's including the roof. I move pretty fast, and I guess a good reference would be about 10 seconds to do half a windshield. My hand flies the full length of the windshield up and down with lube flying everywhere. Have to go slower around all the little nooks and crannies and more than a few times I've felt like I've nearly ripped my pinky off from getting caught on things. I've been using a clay mitt a lot and it's cut the time down to under 45 min usually, but I find I always have to go over a few spots again with a bar to get everything.
I do a optical grade polish (V38 usually) for the standard detail and takes about 30 min. I used to do the whole vehicle, then wipe it down, but it's tough to get off fast, so I started wiping as I go. Also I thought I would add that I wear an apron with pockets, so the polish is right there when I need to put more on my DA pad, and I keep microfibers in other pockets so there isn't really any stopping during the whole process. And I "wax off" like a mad man too.
Wax or sealant takes literally 5 minutes to apply with a DA, so I won't go too much into that. I let the wax dry, or the sealant cure while I move on to the interior.
I usually start with a vacuum to get most of the stuff, and have good kit from Rigid ( I HIGHLY recommend their car detailing attachments) and the dash brush attachment gets all the dust in the nooks and crannies and even in the vents. (there isn't much more bigger pain in the ass than trying to get wet dust off the vent fins when you are cleaning the dash and panels) After the vacuum, I spray some stain extract, and then use a drill brush on the carpets, which usually throws a lot more dirt and sand everywhere, so have to vacuum again. I used to use a hot water extractor, but only have a steamer for the moment until I get some more extra funds. I have tried the steamer on the panels and dash, and it works great, but I can do it much faster with just the all purpose cleaner and a microfiber, which most of the "dirt" tends to be make up on the steering wheel, turn signal knobs, and the radio. If there are leather seats, I'll use a leather cleaner on them and I have a brush just for seats and can scrub them pretty quickly. AFter I clean everything, I apply the interior dressing, then go back and wipe it all off/rub it in. I usually spend about an hour on the interior, including pulling out the mats and cleaning them too.
Once the interior is done, I'll buff the wax or sealant off, and I use a towel in each hand and go nuts. 10 min max including looking over to check for missed spots.
Then I apply the exterior dressing, and I use the same stuff (Blue Guard II) for the wheels and trim. I'm not a big fan of shiny tires cause it starts looking like ass once is starts fading off. The blue guard makes the tires look brand new with just a light sheen, and I usually wipe them off to make it look nice and even. I use a paint brush to apply it to most of the trim, which works great especially in the vents under the windshield, and a microfiber sponge to get the large areas of trim. I do all the rubber seals on the door also. Then go back and wipe it all off/rub it in. The time it takes me to do this part varies a lot depending on the amount of trim of course, but usually not more than 20 min.
Then I go back and do the interior of the windows.... I hate windows.... I have some nice tools, but it'll look great while you are in there, trying to look from every angle, then as soon as you go outside you see crap that you missed or didn't completely get rid of some streaks.
When I started I was working for my buddy, and he made it a point to do things quickly, mostly cause he was paying me by the hour. I would say it would just apply to any time your arms are moving back and forth, that's what should be moving quickly. Completely unnecessary when doing your own vehicle, and I'll probably take over 4 hours just doing the exterior when I do my own.