It's cool to see how a particular model line has changed over the years, and these animated graphics from eBay Motors make it easier to appreciate those generational changes. The evolution of four popular cars is shown in the graphics below, illustrating the styling progression and growth from the first generation to the latest.
The Ford Mustang's evolution is all over the place when it comes to design and size changes. Styling comes full circle starting with the original 1964 ½ model and progressing through the retro years of 2005-2014, while dimensions grow, then shrink, then grow again between the first and fourth generations. Once we get to the current 2015 model, we see a shift away from the retro styling, and the Mustang growing to almost the size of the 1971 model in length. It's difficult to say just how accurate the scale is in these animations, but eBay Motors tells us the size changes are true to life.
Next we have the Chevrolet Corvette, which as you can see changes dramatically from generations C1, C2, and C3, but begins a gradual evolution from C4 onward. The fourth-generation Corvette's wedge-shaped front and sleek sloping roofline continue all the way through the current C7. Granted, there are a lot of other changes, but the basic profile carries over.
The BMW 3 Series may see the most drastic change when it comes to size. Starting from the minuscule E21 generation, the 3 Series grows in each of its six generations until it bloats all the way to the edges of the box by the time we get to the F30 model. Because of BMW's new naming scheme, the 4 Series is shown to keep the two-door pattern going.
The Honda Accord's size progression is almost as dramatic as the 3 Series', growing substantially from the tiny first-generation model. By the eighth generation, the Accord barely fits in the box. The current model brings dimensions back down slightly, though the car is still much larger than when we started. Styling-wise, the Accord's progression is gradual, especially from generations six to nine.
Watch all the gif images to see how each model has evolved over the years.