Looking at toyota dealships in Texas, they offer side signal mirrors as an option for Sequoias. In other parts of the country, there is no mention of this. Has any one noticed this?, that Toyota offers options to only certain parts of the country???
As nyrep1 mentioned these are not Toyota options but options put on at the port (distributor). In the Gulf States Toyota distributor area (Arkansas, Louisiana, Mississippi, Oklahoma & Texas) the distributor adds a LOT of options. In fact in a lot of cases you can't buy a vehicle without lots of un-wanted add-ons from the distributor. Also in some cases you may get aftermarket options instead of the factory options (ie aftermarket Leather Seats instead of Factory).
Regarding those mirrors you mentioned. They are a $399 MSRP otion in Gulf States. You can buy them yourself for about $269.