For me its the Miele Car Clean set with any Miele cylinder every time or Sebo's Extension hose and associated tools when working away (and X model or Felix)
For me, too. I got one of these kits a month or so ago. That tool with the rotating brush does an outstanding job, I'm really impressed with it. Shop Vacs don't even compare, which I never would have known until I tried this setup.
For anyone else thinking of this, the Miele auxiliary hose is a key piece, if you did not have it, you'll have to use the regular Miele hose that comes with a canister, which is long and bulky at the head end, meaning you severely limit the tight angles and cramped spaces in a vehicle you can get to with the power tool attached to the hose.
I was at my favorite vac dealer last weekend, and I spied a small kit of so-called micro attachments lying around. It was a Simplicity Kit, and I got it with a 35mm to US hose converter. This is the kit, it comes in a small, kind of cheapish metal box with a handle, (but for the price I paid, box doesn't matter).
I used to think the car detailers (US term for people who you pay $75 to $175+ to clean every possible surface of your car, inside and out, every "detail") had some special tools or super powerful shop vacs. I'm coming around to the realization that the man on the street can get the same tools the detailers utilize, you just have to look around to find them.
UK VacMan, are you referring to something other than the "
Stair and Upholstery Turbo Brush" (associated tools?) SEBO lists on their website? I'm curious.