http://www.emirates.com/TravellerInf...iveService.asp
There have been some changes effective 01 JUL 2007. Unfortunately the distance for J class pax from LHR is now "only" 50 driven miles, and the rates have gone up for going over the distance.
Also, some clarifications have been made (e.g. the service
is valid for LGA/JFK transfers - but not EWR/JFK ones - and includes gratuity and tolls. This had been asked on the board quite a few times.)
Cheers