Mercedes tested a 'megaphone' like component Wednesday, in hopes of amplifying the engine sound.
McLaren's cars might look a little bit different at this weekend's Spanish Grand Prix.
Nico Rosberg and Lewis Hamilton finished the Spanish Grand Prix in sixth and 12th places today.
Maldonado was fastest in Barcelona Wednesday, ahead of Rosberg, who spent part of the day testing the controversial 'megaphone' exhaust.
Ferrari press release
Fernando Alonso reflected on the 2012 season while having a great time at Scuderia Ferrari's Finali Mondiali -- the annual showcase of the racing machines from the Italian manufacturer. It was a fun event for the Spaniard.
Changes to the technical and design team under the Scuderia Toro Rosso banner showcased their first car today. Luca Furbatto and James Key were on hand with drivers Daniel Ricciardo and Jean-Eric Vergne for the unveiling of the STR8.