Tight wheel wells
A type of steering system that allows for tight wheel wells. This is the narrowest I was able to build it; roughly 5.5 studs wide between the inner wheel tips. Animated demonstration here. And yes, it can be motorised: youtu.be/ue55xXgIHiE
Baker's Dozen Color Variant
Obviously a play on Joel Baker's Creation www.flickr.com/photos/joel_baker/4412360018/in/faves-your... Side A I thought it was cool that the sides had just a bit of color difference. Wanted Baker's all grey look but I don't have the pieces and my lego allowance is empty so cracklink is not an option for now.