[dale_glass]

Out of curiosity, why would you have to be so efficient in an elevator?

An elevator I imagine costs big $$$, has no lack of power, and plenty room for electronics.

[sapling-ginger]

Same reason a top of the line PC tower still has crappy stamped metal frame and crappy injection molded plastic trims.

The main contractor of the elevator unit is a mechanical engineering company, they contract out the control unit to the lowest bidder.

[tomasGiden]

Nope. This was all in house. But we are talking at home lifts for the rich and lazy (and sometimes elderly). And there was quite a bit of electronics in it with processors at each floor, on the control panel and for the motor controller and so on. So the cost added up. But yeah, I agree, some more flash would have been worth it.