Make cupcakes. I just used a box mix. It's easy and they taste yummy! I made 2 batches, one chocolate and one white. I tinted the white ones turquoise.
Make Marshmallow Fondant. You can buy fondant from most craft stores, but I don't really like the taste of it. So I made my own for the very first time! (Note: 1 batch of fondant is enough to make and decorate 2 batches of cupcakes!)
I used this recipe here and it really is foolproof (thanks Amy!).
I have made two batches using this recipe and the second batch I made with vanilla extract instead and I liked the taste of it a little better. But that is a personal thing and they both were really quite yummy, the point is, you can flavor this however you like! Just remember that if you want perfectly white fondant, only use clear extracts (Wilton sells clear extracts in the cake decorating department of most craft stores.)
After the fondant has set for at least 8 hours, being sure to use plenty of shortening on your hands, your counter and your rolling pin, roll small portions of the fondant out. Using a cookie cutter, cut large circles and cover the top of the cupcake with white fondant.
Take another small portion of the fondant and using gel food coloring (not liquid!), tint your fondant any color you like for the cars. (I opted for turquoise...and it is oh-so-pretty!)
Roll out the colored fondant for the cars and using a smaller round cookie cutter, cut out circles for the cars. Then cut the circle in half. This will be the body of your car.
Depending on how quickly you work, you might be able to just attach the car body to the cupcake. If the fondant has dried a bit, use a little water as glue to attach the two pieces together.
Tint another small portion of fondant black or grey for the wheels. Using a small round cookie cutter cut out wheels and attach to the car.
Using the final white portion of your fondant and the same small round cookie cutter that you used for your wheels, cut out small white circles for the front and back windows. Cut each circle into quarters and use one quarter for the front window and one for the back window. Cut small squares for the middle windows.
Use a toothpick and food coloring to draw on the steering wheel.