[TXcarguy]

Side assist is actually the LEDs on the side view mirrors that blink when someone is in your blind spot. Lane Assist is what you're talking about with the vibrating steering wheel, and doesn't appear to be available in the US yet.

That's correct. For anyone interested, check out this thread for a pic of the Side Assist mirror:

http://www.a5oc.com/forums/showthread.php/side-assist-leds-1426/index.html?t=1426