Thanks to several of you who previously submitted to this site. Using your ideas along with several of our own we came up with this Cars Birthday Cake for our son’s fourth birthday.
The cake was made from two boxed cake mixes. Each was baked in a 9×9 pan and I placed them next to each other. The cakes were iced entirely in yellow and trimmed in red. I used the Wilton grass tip to make the grass. The road and crowd areas were make using sprinkles. We added four die cast cars that our son is already attached to.
Related cakes:
Coolest Cars Birthday Cake 
12+ Coolest Frozen Birthday Cake Ideas for the Ultimate Frozen Theme Party 
Awesome CARS 2 Scene Made of Cakes for a 4th Birthday 
Coolest “Green Cast” Spongebob Cake 
12+ Coolest Minnie Mouse Cake Ideas 
Cute Homemade Cars Scene Birthday Cake with Flags 
Coolest Cars Race Track 2nd Birthday Cake 
Coolest South Park Cake
Did you use green sprinkles for the grass and chocolate jimmies for the road, or did you use crushed Oreos? Just curious. Thanks.