Also, it appears that Zac will actually be heading to Spain and Italy at the end of this week for 'Lorax' promo. At least things popping up on twitter and a couple sites indicate this.
Zac will apparently be in Madrid on March 8th. It seems he'll be at a meet and greet with the voice actress who dubbed Audrey (Angy Fernandez) at El Corte Inglés de Paseo de la Castellana at 5:30pm (1, 2, 3, 4, 5, 6, 7). P.S. Watch the Spanish trailer here with an intro by Zac.
The next day he is apparently going to be in Rome with Danny for a press conference and screening (1). ETA: Another article here says they'll be at Casa del Cinema at 10:45.