2x4 little car, work in progress

I think I'm the first one to use this plan. I am a newbie so maybe I made it harder on myself but I diverted a little bit. I did not have 4 inch screws that would work with the treated lumber, and they were going to cost me a very pretty penny to get. I did have a box of 3 inch treated wood screws leftover from when we made the floating bunk beds » {LOVE THOSE} so instead of building each side, I had to build it level by level,attach them all together inside once I was finished. I use some leftover pieces to add a little seat in the trunk and a license plate. you also might have a few scrap pieces that you could use for rear view mirrors and headlights, but I would like to keep this simple and chic. I have a small wood slat piece that I will use for a grill on the front { from an old wooden toddler bed rail} so his car will look just like the tiny Fisher Price one he plays with! I'm still searching for a free steering wheel off an old toy or perhaps I will use my husband's 2.5lb free weight. I think it is perfect if I can figure out how to attach it... and how to get away from my husband ;)