So since Lamborghini is owned by VW, then we COULD see:
Bumblebee (VW)
Jazz (Porshe) (only one mold but the same transformation mechanism as the fairldayZ so a possibility):pray:
Sunstreaker (Lamborghini)
Red Alert (Lamborghini)
Also from Nissan:
Prowl
Bluestreak
Smokescream
IF Toyota is...