Transformers 2 (Great move) but what was the Autobot name who transformed

[El Grande Josue]

into the silver corvette? In the movie one of the autobots is a corvette who has an attitude much like Jazz off of the first movie. Maybe a relative I don't know. But he is hardly mentioned in the movie and I am really curious. Cuase he is too cool.
"Oh im just too damn good."