These new ones don't even go to the trouble of having an internal cordwinder even though there is ample room in the carcass for one.
The reason, of course, is the cheap stiff vinyl jacketed power cord which does not coil easily...until is warms up while running the vacuum on high amps - a little easier to re-wrap in the cord hooks when warm but then it cools and sets in great stiff loops. (that's why contemporary uprights have a 'unlocking' swivel upper guide to allow the stiff coils to fall off the vacuum hook.
Check out the relative softness and flexibility on a current quality Kenmore canister, for instance.
Oh for the return of rubber or neoprene coated power cords...
Even manual wind cords from the 50s and 60s were supple enough to coil effortlessly and tangle-free. These new cheap cords fight you every step of the way...
Dave