I'm pretty sure that they do! I think that you have to call them for rates/reservations on Limo's though....
I know that Happy Limo and Fl Towncar have limo's as well.
I contacted Tiffany about one month ago about the price of their Limo Service - they quoted me $225 RT - We're staying half the trip at AKL and the other half at VWL.
We booked with the Dis Site Sponser - FL Tours and it was $190 RT.