I was thinking about games I would play as a kid, and I thought of "I spy!" It's perfect for this lesson, but my kids like exciting games, so it was a little boring for them.
I made a few slides introducing the modes of transport, including a few new ones, and colors (with a few extras as well). Then I taught them "I spy something (color)." The next slide is full of pictures of different colored transport vehicles. The student picks on and says "I spy...," then the class has to guess which picture it is, i.e. "It's a car!"
Hope your class enjoys it! Feel free to change anything!