I rarely make cards for children, there aren't any in our family at the moment, children are grown up, no grandchildren or great nephews or nieces around yet, so I was a bit stuck for stamps until I remembered Rev up The Fun.
I used a sentiment image which I must admit I have no idea where it is from or what it's called ( if you can tell me I'd be very pleased, as I would like to get this one). I used it a couple of years ago at a craft club workshop and stamped it a few times on different papers.
Then I cut a dark blue mat, paper pieced the letters and made a panel for the bottom. I heat embossed the car image to make it shiny.
I think this would be a good car for my sons when they were small. The both loved playing with their toy cars, building roads and sticking them up in the large plastic garage...happy days!