Commence scanning ... now!

I've made a variety of truck images, but the rest is still all pygame rects as I'm still focusing on functionality over beauty. I've added the basic scanning functionality with scanning stations that can be placed with a mouse-click and a scanning bar to the trucks. The scanning stations need images and types, the graphics for which are worrying me! I've no idea how I'm going to draw the different types yet. But soon I'll be able to move onto the UI elements to select/ purchase scanning stations and fine trucks. Not bad considering I'm moving house this week :/