Trying to stay alert during that long haul to Monterrey?
Or did you just have a particularly killer Pilates workout that left your glutes sore?
Perhaps you may be interested in a seat feature that BMW offers.
Our long-term BMW 750 has the Active driver seat equipped with butt massage.
The driver's bottom seat cushion has a massage function activated with a door mounted switch to the far right, opposite of the Gentleman function switch.
The sensation is similar to that of a seat's lumbar support, but instead pressing on your booty. But it's a smaller lump than a lumbar, and feels about the size of a racquetball or perhaps a golf ball.
There's no vibation, just the lump that intrudes up into your right cheek, deflates, the feels as if it moves to the left cheek, then deflates. The lump seems to move in a somewhat circular path beneath your tuches, but there is more than one lump.
BMW's website states "Active seats are also available whereby the seat bottom moving up and down intermittently to mobilise (sic) the occupant's muscles around the hips and lumbar spine to prevent any feeling of cramp or fatigue."
Check out this lame video of the rump shaker in action.
I tried the rump massage for a couple of minutes, became annoyed, then turned it off.
I suppose you could use it to keep you alert during a long trip. Or if you were bored.
PS: I'm anticipating that some of you may use the trite term "happy ending" in your comments.
Try something original, OK?
Albert Austria Sr Vehicle Evaluation Engineer @ 12,700 miles

mercedesfan says:
04:22 PM, 07/23/09
It is still no match for the individual air bladders built into the seats of my S550. I will take rolling, heated massage any day over a bizarre posterior-poking. ;)
caheew says:
04:22 PM, 07/23/09
What is up with the fuzzy dice?!?!
7driver says:
04:25 PM, 07/23/09
How does it compare vs. the butt massage in the Ford Taurus?
carguy622 says:
04:26 PM, 07/23/09
caheew: I don't know. I'm sick of them.
Massaging seats seem like such a luxurious top of the line type thing, but the new Taurus has them available. These features are trickling down already. Time keeps on slipping... much faster these days.
adavis2493 says:
04:42 PM, 07/23/09
Massage Feature: Really?
Just go over a bump and save a few thousand.
cheslin says:
05:23 PM, 07/23/09
mercedesfan: not to mention the sweet drive-dynamic bostering!
I don't like seat mounted controls, I'd rather have it all visible, especially something that has very adjustable seats.
But hey, some people might like getting poked in the rear by their bimmer... Couldn't resist...
subaru123 says:
05:37 PM, 07/23/09
Again, What is with the dice? Dice have been seen in the Mazda Mazda 6, Nissan GT-R, Audi S5, and BMW 750i.
bkochuk says:
06:06 PM, 07/23/09
I believe they're running out of "amenities" to add to luxury cars...
fuhteng says:
06:31 PM, 07/23/09
Wow. Wouldn't the freak you out if you accidentally hit the button?
msdaisy says:
06:43 PM, 07/23/09
Is there an auto-off?
zc1 says:
07:46 PM, 07/23/09
Rump shaker. Nicely done. Wreckx is in full effect. I'll pass on that "feature" though.
uncanny_man says:
10:25 PM, 07/23/09
Wow, I thought this sounded like a dumb and creepy feature in the taurus...
dougtheeng says:
06:03 AM, 07/24/09
I don't know why there is so much negativity! I'd love a massage anytime!
ahightower says:
08:50 AM, 07/24/09
It prepares you for the dealer service bill. BOHICA.
felonious says:
09:50 AM, 07/24/09
No offense, Al, but you sounded kinda dickish in the PS.
SnakeDoctor says:
10:18 AM, 07/24/09
felonious -
I just didn't want many comments like happpy ending this, happy ending that.
Because that's what I would've commented!
I did like ahightower's bohica though...
Regards